* the most frequently visited sites
- Min-Su Shin's homepage | KASI : Twitter and Facebook (Galaxy Evolution Research Group, KGMT Science Group, CosKASI, KMTNet, KMTNet SN Project, KVN, BOAO, SOAO, LOAO, Meteor, Radio - wiki, OWL, SOS)
- Useful maps | Traffic condition in Daejeon | Air pollution condition in Daejeon | Let's Korail | Performances in Daejeon | The easy legal information service | National Law Information Center
- The New York Times (Most E-Mailed) (Most Viewed) (Science) (Technology) (Cartoon) (Art) (Education) (Sunday Book Review)
- Los Angeles Times (Science) | Chicago Tribune (Opinion)
- Hani (Opinion) (Books) | Khan (Opinion) (Books) | Spiegel online - international
- Ohmynews (Books) | PRESSian (Books) | The Huffington Post - Korea The Huffington Post - UK The Huffington Post - US
- Times Online (World) (The Times Literary Supplement) | Guardian (Audio edition) (Science Blogs) (Data) (Books) (Education)
- Arts & Letters Daily | poets.org | Brain Pickings | Science Donga - contents list | Quanta Magazine
- The Michigan Daily | The Daily Princetonian | The Yonsei Chunchu | Yonsei Digital Opinion
- The Chronicle of Higher Education (Books) | The New York Review of Books | London Review of Books | The Times Literary Supplement
- Science book reviews | Nature books and arts | The University Bookman | Daum Book | userstorybook.net
- Secret of Korea | Le Monde diplomatique | Znet and Z magazine | The New Yorker | Boston Review (Books & Ideas)

* Search engine
- Google (America) | Google (Korea) | DuckDuckGo | Startpage | Bing
- Twitter search | Wordpress search | Tumblr search | Websta | Flickr search | DOGPILE | Filespart.com | FileTram | WolframAlpha
- Noranbook | Daum book | BookFinder.com | ISBNdb.com | FetchBook.Info
- CiteSeerX | CiteULike
- Wikimedia Commons | Let's cc | Pixabay | FreePhotosBank | morgueFile | ImageBase | Public domain vectors | PDPics.com | Stockvault.net
- Jamendo | Free Music Archive | Freesound.org | opsound | Free Music Licensing | ccMixter

* Journals and Magazines
- Astrobiology | Life Sciences in Space Research | International Journal of Astrobiology
- Journal of Computational Physics | Computer Physics Communications | Journal of Computational and Applied Mathematics | Computer Methods in Applied Mechanics and Engineering | Computers & Mathematics with Applications
- Applied Mathematical Modelling | Journal of Mathematical Analysis and Applications | Journal of Scientific Computing | Numerical Methods for Partial Differential Equations | Computers & Fluids
- Applied Mathematics and Computation | Mathematical Methods in the Applied Sciences | Numerical Linear Algebra with Applications | Inverse Problems | Applied Mathematical Modelling | Applied Numerical Mathematics
- Numerical Algorithms | Journal of Dynamics and Differential Equations | SIAM Journal on Scientific Computing | Multiscale Modeling and Simulation: A SIAM Interdisciplinary Journal | SIAM Journal on Computing
- SIAM Journal on Mathematics of Data Science

* Personal Homepages and Internet community
- Min-Su's Cyworld Minihompy
- Geo&III 96' class | Geo&III 97' class | Geo&III 98' class | Geo&III 99' class | Geo&III 00' class | Geo&III 01' class | Geo&III 02' class
- Geo&III 03' class | Geo&III 04' class | Geo&III 05' class | Geo&III 06' class | Geo&III 07' class | Geo&III 08' class | Geo&III 09' class
- Geo&III community
- Geo&III Usamo (Book Club of Geo&III)
- Community of Yonsei Astronet
- Cyber Cafe of Yonsei Astronomy Undergraduates | Yonsei Astro-Atmo community
- Cyworld club of Princeton Korean Graduate Students
- Young Rok Kim (Yonsei University, Korea) | Hahn Yi | Dae-Won Kim | Eunji Jun | HHnim

* Dictionary / Encyclopaedia / Library / Cartoons
- Merriam-Webster Dictionary (Visual dictionary) (Learner's Dictionary) | Macmillan Dictionary | Urimal (check spelling and grammar)
- Urban dictionary | Oxford English Dictionary | Oxford Learner's Dictionaries | Cambridge English Grammar Today | Daum Dictionary | Cambridge Dictionary | UsingEnglish.com | Ludwig | phraseup
- Grammar-Quizzes.com | Grammar traps | Korean-English-Korean Dictionary | Hanglish | Vocabulary.com | Wordnik | The Free Dictionary
- WordReference.com | BBC learning English | Google translator
- Britannica Online | Wikipedia
- WWW unit converter | Time converter | NRL Plasma Formulary | Astro-Physical calculator | NIST Data Gateway ( NIST Physical Reference Data)
- Yonsei University Central Library | LG Sangnam Library | Safari Books Online
- ACM digital library | Good Research Practice | NASA Scientific and Technical Information Program | U.S. Department of Energy Office of Scientific and Technical Information | US Defense Technical Information Center
- LG 경제연구원 | KB금융지주 경영연구소 | KDI (나라경제) | 한겨레 경제사회연구원
- xkcd | Toothpaste for dinner | Piled Higher and Deeper

* DIY
- OpenSCAD user manual | FreeCAD documentation | LibreCAD user manual
- autotrace manual | 3d-converter | dxf2svg-inkspace | Text to DXF
- Electronics Tutorials

* Travel (log)
- OpenStreetMap: Metro Extracts, MapOSMatic, Field Papers, Walking Papers | gmapcatcher
- mappery | MapQuest.Com | Google Map
- Weather: weather.com | MeteoEarth.com | Holiday Weather | Weather Underground | Korea Aviation Meteorological Agency
- Weather: FlightWeather | CheckWX.com | Climate Reanalyzer | OpenWeatherMap | Space Weather for Aviation Service Providers
- NWP files: NCEP Data Products | The Meteorological Service of Canada | GRIB-API
- timeanddate.com | The Golden Hour Calculator | Time Zone Map | Currency exchange rate (USD/KRW)
- FlightStats | Flightglobal Atlas | FlightView | Flightwise | FlightArrivals.com | FlightAware | FLIGHTExplorer.com
- Airport Guide | Google earth 3D Airspace | OpenFlights | AirNav Live | Korean AIS | European AIS | US AIS | FAA airport status | FAA PilotWeb | Flightradar24.com | RadarVirtuel.com | Aeroseek Flight Tracking
- TravelMath.com | MileCalc.com | Great Circle Mapper | NWS International Flight Folder Program
- World Aero Data | LiveATC.net | OurAirports | SkyVector | planefinder.net | Contrailz | VFRMAP
- CheapOair | ORBITZ | Expedia | travelocity | BookingBuddy.com | Hipmunk | KAYAK
- Yapta | Skyscanner.net | Bing Travel | Booking.com | Hotels.com | Airbnb | SpaceCloud | flights24.com
- fly.com | InsideTrip | CheapTickets | Faregeek | airfarewatchdog | fitgraph.co.kr
- DealBase - Flight Deals | AIRLINE ROUTE | Matrix Airfare Search
- TripAdvisor | MYTravelGuide | 연합이매진 | KTX Magazine | In Your Pocket | ArrivalGuides.com | A View On Cities | They Draw & Travel | Tripomatic
- We Are Traveller | DineSite.com | SitOrSquat.com | CNN - Travel | Time Out Worldwide
- Wikitravel | The New York Times - Travel | The Guardian - Travel | The Telegraph - Travel | Travie | Rome2rio
- 0404.go.kr | CDC Travelers' Health | Foreign travel advice - GOV.UK | U.S. Travel Alerts and Warnings
- 동네서점 | SeatGuru | SeatExpert | The Guide to Sleeping in Airports | iFly.com | Airliners.net | World Airport Codes | AirLineMeals.net

* Valuable Links
- Astronomy & Astrophysics : e-Print archive (Korea) ADS (Korea) e-Print archive (LANL) e-Print archive (IOP)
- ADS Abstract service ADS Bib. service ADS Abstract service (NAOJ) ADS Bib. service (NAOJ) | CDS | NED | Astrophysics Source Code Library
- NDSL(National Discovey for Science Leaders) | RISS(Research Information Sharing Service) | DBpia | dblp | NAVER 전문정보 | NASA Scientific and Technical Information Program
- Ned Wright's Cosmology Calculator | Luca Zappacosta's Cosmology Calculator | NIST Digital Library of Mathematical Functions
- Physics : APS journals | PDG Reviews, Tables, and Plots | Tables of Physical & Chemical Constants | Physical Constants and Astronomical Data
- NASA Small Spacecraft Virtual Institute | NASA Solar System Exploration Research Virtual Institute
- Computer | This Week in Computational Astrophysics

* Observation
- Gemini Observatory | MMT Observatory
- National Virtual Observatory DataScope | National Virtual Observatory Registry | NOAO NVO Portal | National Virtual Observatory Open SkyQuery | VAO Closeout Repository | LSST data management
- Apache Point Observatory | IAU Standards of Fundamental Astronomy | Astronomical Calendar for Mauna Kea | Mauna Kea Weather Center (NWS Area Forecast Discussion, NWS Public Forecast for Summits, NRL NE Pacific/Hawaii, NRL Pacific/Hawaii, NWS radiofax charts for the Central, Southeast and North Pacific)
- OCIW | Las Campanas Observatory | Keck Observatory | IFS wiki
- Spectrophotometric Flux Standard Stars | Photometric standards | Coordinate calculator | Date/time conversion | NOAA Solar Calculator | Coordinate Conversion and Precession Tool | airmass.org | Object Visibility
- American Observatory Weather Page | All Sky Cam.com | Finder Chart | Constellations - The Night Sky Atlas | Redshift and lines
- NASA Eclipse | USNO Data Services | Eclipses Online
- NOAO Proposal | Subaru Proposal

* Sites related to SDSS : Gravitational lensing & Quasars (Collaborators : Prof. Michael Strauss, Bart Pindor, Masamune Oguri, Joe Hennawi, and SDSS members)
- SDSS / SkyServer | SDSS CasJobs | SDSS CAS Schema Browser | CASTLES Survey | Multiply Imaged Quasars
- Data catalogues from SDSS studies at MPA/JHU | NYU Value-Added Galaxy Catalog | SSGSS | SDSS u-band Galaxy Survey and other Southern Survey data
- Princeton/NYU SDSS Imaging | Princeton/MIT SDSS Spectroscopy | UMich/UChicago SDSS IDL Libraires | sdsspy
- SDSS Information and Document Archives | Index to SDSS publications | List of SDSS Projects
- Retrieve an SDSS Atlas Image | DR7 Explorer | DR7 SQL | Possible objects | Personal DB
- CFHTLS Strong Lensing Legacy Survey | The Sloan Lens ACS Survey | WFCAM Science Archive | VISTA Survey Progress Pages | VISTA Science Archive
- Lensing demonstration | GalSim | GRAVLENS | LensPerfect | GRALE | Lensview | XFGLENSES | SLAP | PixeLens | LensTool | lenstronomy

* Sites related to cosmological hydrodynamics simulation - galaxy formation (Collaborator : Ken Nagamine, Renyue Cen, & Jeremiah P. Ostriker)
- Stellar evolution: EVOLPACK (ASTEC, ADIPLS, MPIKAIA)
- Population synthesis: GALAXEV | PEGASE | Starburst99 | Maraston | GALEV | Yonsei Evolutionary Population Synthesis
- Spectral synthesis/analysis: SED fitting | MILES | STELIB | Spectral libraries for GAIA | The Asiago Database of Spectroscopic Databases | Starlight | IR galaxies | GRASIL | Stardurst | ULySS | Cornell Atlas of Spitzer IRS | CIGALE | MAGPHYS | SPECTRUM
- Model atmosphere: MARCS | TMAP | ATLAS9 | Atmos - ATLAS9 + ATLAS12 | SSynth | CMFGEN | POLLUX | MOOG (a package installer) | Synspec | Libraries of stellar spectra
- Radiation transfer: HO-CHUNK: 3-D Radiation Transfer Codes | Torus | MC Radiation Transfer | 3d Mocassin | 6S (Py6S) | Publicly available 3D radiative transfer codes | RADEX | MC3D | RADMC-3D | LIME | ARTIST | RATRAN | SKIRT | Hyperion | SKIRTOR | PenMesh | SPHRAY | Sunrise Monte-Carlo Radiation Transfer | OpenMC | MCARaTS | NuT | Monte Carlo Simulations
- Atmosphere: Community Radiative Transfer Model (CRTM) | The Atmospheric Radiative Transfer Simulator | Tlusty | McArtim (Monte Carlo Atmospheric Radiative Transfer Inversion Model) | Gastropod | VSTAR | atmosphy | libradtran
- Photo-z: EAZY | LE PHARE
- Ken's work | plots
- Galacticus | The General Catalogue of Photometric Data | UNSIO | Simulation codes for hydro/magnetohydro and N-body
- Cosmic evolution of global quantities (SFR, stellar mass density, HI density, galaxy mass function)

* Sites related to galaxies and their stellar populations inferred from spectra
- VESPA | GOODS | DEEP2 | zCOSMOSM | VVDS
- AEGIS | COSMOS | MUSYC | GOALS
- Light scattering: ScattPort | ScattPy

* Sites related to space environment, safety and life in the universe
- NASA Meteoroid Environment Office | NASA's All Sky Fireball Network | JPL Asteroid Watch
- International Meteor Organization | UK Meteorite Observation Network | CAMS | Asteroid Data Services by Lowell Observatory
- Earth Impact Database | PDS Asteroid/Dust Archive | Cometary Science Archive | KoreaMET | Meteor Showers | Meteor : An Intelligent Approach
- Comet Dust Dynamics | Open Dynamics Engine | ESyS-Particle | ORSA | OVT | Flyby | libpredict | Xplanet (configurator)
- Stellarium (wiki) | Celestia (The Celestia Motherlode, Wikibooks) | Nightshade | XEphem | SaVI | Real time satellite tracking | CelesTrak | GMAT
- NASA JPL NEO Program | JPL Solar System Dynamics | IAU Minor Planet Center | The Space Guard Central Node
- European Asteroid Research Node | NEODys | Small Bodies Assessment Group (SBAG) | The Spaceguard Centre
- NASA Space Environments and Effects Program | NASA Space Radiation Program
- SETI Institute | NASA Human Adaptation and Countermeasures Division | National Space Biomedical Research Institute
- Meteorwatch.org | Radio Meteor Observation | Space Weather Radio | NOAA/NWS Space Weather Prediction Center | SolarSoft Latest Events
- SIDC | Solar Terrestrial Dispatch | Living Reviews in Solar Physics | SWMF
- NOAA's Comprehensive Large Array-data Stewardship System | NASA Earth Observing System Data and Information System (EOSDIS)
- NASA NEO | USGS EROS Center (EarthExplorer, Glovis, Geo-Science Eye Toolkit) | USGS Astrogeology (github) | PlanetaryPy | NMSC of KMA
- Satellite image tools: AUROra MApping Toolkit (Doc) | PyTROLL | Panoply | McIDAS-V | GLIDER

* Sites related to reionization research (Collaborators : Renyu Cen and Hy Trac)
- Hecate | Tungsten | Cobalt | SDSC User Support | SGI SCSL | Intel Math Kernel Library
- some results | First Light and Reionization | STAR AND STRUCTURE FORMATION: FROM FIRST LIGHT TO THE MILKY WAY

* Sites related to MHD/HD research (Collaborators : James Stone, Mateusz Ruszkowski, and Julien Devriendt)
- The Athena Code | Orangena | Orangena status | Orangena allocation calendar
- Blue Gene/L: System Administration | Blue Gene/L: Application Development
- This Week in Astro Fluids | Preprints on Conservation Laws | Laboratory for Computational Astrophysics, UCSD
- CFD Online | Astro-Sim.org
- FLASH home | (API) | (HOWTOs) | QuickFlash (Doc) | HERACLES | RAMSES (DOC) | RAMSES-GPU | PyMSES
- Alsvid | OpenFOAM (Workshop) | fds-smv | VH-1
- Cantera | KPP | KROME | cantera | CHEPROO
- Cosmic-rays: DRAGON | GALPROP | Database of Charged Cosmic Rays | Cosmic-ray database compiled by A. W. Strong
- LFM-TIEGCM-RCM (LTR) | ZDPlasKin | BOUT | CELESTE3D | Angora: FDTD electromagnetic simulation package

* Sites related to nearby galaxies and feedback
- The HI Nearby Galaxy Survey | S4G: Spitzer Survey of Stellar Structure in Galaxies SINGS: Spitzer Infrared Nearby Galaxies Survey | H-alpha surveys | PINGS (PPAK IFS Nearby Galaxies Survey) | LVLS (Local Volume Legacy Survey) | KINGFISH (Key Insights on Nearby Galaxies: a Far-Infrared Survey with Herschel) | The ACS Nearby Galaxy Survey Treasury
- TRILEGAL | Besancon Galaxy model | Galaxia | DICE | galpy

* Sites related to galaxy mergers, shock, and cooling
- The effect of photo-ionization on the cooling rates of enriched, astrophysical plasmas
- Time-Dependent Ionization in Radiatively Cooling Gas
- XIM

* Sites realted to GRB, its host galaxy, and IGM (Collaborator : Edo Berger)
- GCN VOEvent Information | SDSS GRB Response | GRAASP(GRB Afterglows as Probes) | Well localized GRBs | GRB literature | GRBOX
- Atomic Data for Astrophysics | splatalogue.net | CHIANTI | CfA Atomic & Molecular Databases | NIST Atomic Spectra Database
- PINTofALE VALD (Vienna Atomic Line Database) | The Cologne Database for Molecular Spectroscopy (CDMS) | MOLAT Atomic and Molecular Data | ATOMDB
- Cloudy & Associates | Xstar | MAPPINGS | RADEX | ITERA | CASSIS | SMART | JPL Molecular Spectroscopy Team | HITRAN
- quarum | VPFIT | HIRES Damped Lya Abundance Database | VAMDC (Virtual Atomic and Molecular Data Centre) | ExoMol
- NASA Ames Research Center DB | Web Infrared Tool Shed | YSO SED

* Sites related to YSTAR project and time-domain astronomy (Collaborators : Prof. Yong-Ik Byun and YSTAR members)
- StarDB : Analysis of spatial and temporal variability in astronomical data (monitoring by NASA GSFC HEASARC)
- The All Sky Automated Survey | The Optical Gravitational Lensing Experiment | MACHO Project | EROS Project
- GAIA Variable Stars Working Group | GAIA DPAC | Time Series Center | Center for Time-Domain Informatics | AAVSO
- Skyalert.org | Robotic Telescopes | SkyDOT | The Catalina Sky Survey Data Release | FSVS | V.S.O.P. | NStED
- RAVE | Monitor | eSTAR | DwarfArchives.org | SuperWASP | Kepler | SDSS Stripe 82 | DASCH | YSOVAR
- Dark Energy Survey | ESO Public Surveys | UKIDSS | Southern Sky Survey
- NOVAS | IAU SOFA | ERFA (Essential Routines for Fundamental Astronomy) | Starlink PAL (PALpy) | PyTPM | PyEphem | pyorbital | AEPHEM | OOrb | PyKEP | Pysolar
- Standard Light Curve Fitting Program | Fitlc | NFFT | FINUFFT | Period04 | VARTOOLS | SigSpec | LombScargle-R | NiTime | LastWave
- wavelet1d | wavepy | liftwave | hsfft | wavelib
- CALEB(Catalog and AtLas of Eclipsing Binaries) | PHOEBE | JKTEBOP | JKTABSDIM | Nightfall | Information Bulletin on Variable Stars
- USNO Double Star Products | Binary Star Combined Solution Package | Icarus | Computer codes for detached eclipsing binaries
- Binary visualizations | Binsyn | Nightfall | Transit Analysis Package | orbitutils
- McLuster | Messy2 | fewbody | Orbital | poliastro | eBai Project | Xnbody
- GRBs: GRBlog : Blog for Gamma Ray Bursts | The Gamma-Ray Burst Coordinates Network | SWIFT mission
- SNe: SUSPEND | PHOENIX | SYNOW | SNe spectral templates | SUSPECT | SNANA | SALT | Latest SNe
- Synthetic Colors and Evolutionary Sequences of Hydrogen- and Helium-Atmosphere White Dwarfs | WD Catalog
- Crowd-sourcing: PyBossa | crowdcrafting | Bossa | Bolt | BOINC
- The NStars Spectra Homepage | GEOS RR Lyr web page | DDO Database of Galactic Classical Cepheids | Kepler Eclipsing Binary Catalog | Search in var.astro.cz
- Sonification: SPDF - Sonification | The Sonification Handbook | SoniPy | Sonification Sandbox | SuperCollider | CLAM

* Statistical analysis and machine learning software
- Papers With Code: the latest in machine learning | GroundAI - Every ArXiv paper needs to be discussed | Data Mining and Analytics Resources | A Statistical Learning/Pattern Recognition Glossary | The Data Visualisation Catalogue
- MOSAIC | NIST/SEMATECH e-Handbook of Statistical Methods | Statlect | OpenTURNS | MXNet | TensorFlow (Github)
- Handbook of Biological Statistics | International CHASC Astro-Statistics Collaboration | Journal of Machine Learning Research
- Mixture Modelling page | Orange | Torch | Darwin | Shark Machine Learning Library
- WEKA | HCE | XCluster | D2K | CLUTO | Databionic ESOM | mr-mpi-som | Shogun | LIBSVM | LaSVM | libcluster | pyclustering | Cluster
- Pattern Classification Program | Clusutils | pspectralclustering | TMVA | PyMVPA | StatPatternRecognition | pynopticon
- Waffles | scikits-learn | scikits.statsmodels | mlpy | ANN | Pyro | bayesinv | Neuroimaging in Python (nipy, nipype, nitime, nibabel, dipy, pbrain)
- Probabilistic Networks Library | Efficient Algorithms for K-Means Clustering | Fast Implementation of the ISODATA Clustering Algorithm | Multivariate Data Analysis Software and Resources | Decision Tree for Optimization Software
- NEOS Optimization Guide | GPyOpt | pyGPGO | Optuna | Bayesian Optimization | GALAHAD | Toolkit for Advanced Optimization | Ceres Solver
- pCMALib | DEAP | queso | optimc | Pagmo
- Apophenia | OPT++: An Object-Oriented Nonlinear Optimization Library | Hyperopt | libcmaes | OpenOpt | Pyevolve
- SPLICER | Asynchronous Parallel Pattern Search | DAKOTA | LEMON | Clustered Dirichlet Process Mixture Modelling | STK++ | Tuwo Library
- Machine learning open source software | MLC++ | mlpack (for C++) | AutoClass C | EMMIX | jMEF | Snob | H2O | Caffe | oryx | hivemall | Vowpal Wabbit | MLBase
- GMMBAYES | PyMix | pymc | MIXMOD | Massive Parallel GPU-based Computing for Statistical Science
- Clustering Algorithms for Massively Parallel Architectures Including GPU Nodes (CAMPAIGN) | MLDemos | astroML
- OpenBUGS | Mocapy++ | ggmcmc | emcee | Monte Python | abcpmc | CosmoPmc | CosmoHammer | MultiNest | BAT | bnpy-dev | BayesPy
- MADAI-DistributionSampling | hddm | libcluster | pyLDA | PyNPB | pyvb
- The R-INLA project | LibBi | Bayesian Analysis Toolkit | BCM (Bayesian analysis of Computational Models using samplers) | Stan | pybasicbayes | CRAN Task View: Bayesian Inference | GraphLab
- Statsmodels | Probabilistic Programming and Bayesian Methods for Hackers - Using Python and PyMC
- GPy (doc) | pyGPs | Gaussian Process Toolkit (GPTK) | bigGP
- R: KRUG | CRAN | rddr.io | Simple Graphs with R | R Examples Repository | One Page R | R Graphical Manual | R Programming Tutorial | Advanced R | Cookbook for R | R Tutorials | Quick-R | inside-R | RSeek.org | It's crantastic! | R-bloggers.com | Lattice: figures and codes | R Graphics Second Edition: figures and codes | Programming in R (UC Riverside) | Geographic Data Analysis and Visualization: Topics and Examples
- gplots (inside-R, rdocumentation.org) | rainbow (inside-R, rdocumentation.org) | fda (inside-R, rdocumentation.org) | fields (inside-R, rdocumentation.org) | plotrix (inside-R, rdocumentation.org) | rCharts | googleVis
- R documentation for package "base" | R documentation for package "graphics" | R documentation for package "utils" | R packages | R graph gallery | R Technotes and Graphics Gallery | R Site Search | R Help Center | RStudio
- Deep learning: PyTorch | Catalyst> | Glow | Captum | Horovod | Ensemble PyTorch | VISSL | Detectron

* High-performance computing and scientific visualization
- Computing resources: Advanced Research Computing at KASI | Oxford Astrophysics Berg | Oxford Advanced Research Computing | Safe for DiRAC | DiRAC Consortia and Consortia Members | DiRAC Complexity at Leicester | Oxford e-Research Centre | UK e-Infrastructure south | UK National Grid Service | Teratec | PICSciE (Princeton) | Tigress (Princeton) | XSEDE | TACC (Ranger) | LSAIT Research System Group (UMich LSA) | Center for Advanced Computing, UMich
- GPU/Hybrid computing: GPGPU.org | hgpu.org (high performance computing on graphics processing units) (source codes, tutorial, Physics application) | gpucomputing.net | CUDA | OpenACC
- GPU: PIConGPU | mallocMC | ScatterAlloc | GoAi - GPU Open Analytics Initiative
- OpenCL: OpenCL | SnuCL | clogs | clpp | cldtcwt | SimpleOpenCL | vexcl | KOAP | fortrancl | openclcc | OpenCLIPP | Boost.Compute | pyopencl | clBLAS | clFFT | cran/OpenCL | oclpb
- NISN(National Institute of Supercomputing and Networking) | CAC at KIAS | Korean Society for Computational Sciences and Engineering | NIMS(National Institute for Mathematical Sciences) | PLSI | Top 500 list
- MPI commands and routines | MPI Tutorial | MPI summary | C, C++, and Fortran bindings for MPI-1.2 | MPI Documents | MPITypes | CiFTS (Coordinated and Improved Fault Tolerance for High Performance Computing Systems)
- OpenMP spec. | OpenMP summary | Guide into OpenMP | GCC Wiki OpenMP | OpenACC spec. | GCC Wiki OpenACC
- XKAAPI | Open-MX | cOMPunity | PyPar | Thrust | genericCommunicator | pyre
- SciDAC Outreach Center | SPEEDUP (The SWISS forum for Grid and High Performance Computing) | Cluman | ClusterShell | SLURM documents | TORQUE | PBS script examples
- LLVIEW | Using Sun Grid Engine | Mesos | GNU Parallel | Python Joblib | Documents for parallel machines
- Benchmarks: NPB | HPL | benchmark | Darshan | IOR HPC Benchmark
- Checkpointing and restarting: DMTCP | SCR | CRIU | SCR
- MOOSE | Amuse | Cactus Code | MAPPER Multiscale Coupling Library | The Model Coupling Toolkit | The Bespoke Framework Generator
- MARMOT | Vampir | mpip | KOJAK | PAPI | Periscope | Scalasca | Padb | Performance Visualization for Parallel Programs
- HPCToolkit | IPM | Open|SpeedShop | GPTL | JUBE Benchmarking Environment | TAU
- BSC performance tools | Parallel Software Development Tools (LLNL) | Score-P | LinkTest: Parallel MPI PingPong Test
- DaxToolkit | Visit manual (VisItusers.org) (Tutorial) | VISTA | Paraview wiki | tomviz | Paraview tutorial | AstroViz for Paraview | The yt Project | parastro
- PISTON (A Portable Cross-Platform Framework for Data-Parallel Visualization Operators) | IFrIT | Manta | Chromium | VolPack | Ascent | PMViewer
- AstroMD | Vis5D+ | VisIVO | map3d | Seg3D | VisTrails | MayaVi (Doc) | VAPOR | ParVox | Viewpoints | ChomboVis | GLnemo2 | Partiview
- parvis | napari | SPLASH | StarSplatter | ParaViewMeshless | ParticleVis | Teem | Vispack | Visapult 2.0 | powerspec
- Splotch | viewpoints | pNbody | NBODYKIT | Py-SPHViewer | Equalizer | ImageVis3D | Drishti
- ParMETIS | SCOTCH | Planguages | PETSc (Doc) | HiOp | SUNDIALS | MUDPACK | PHAML | petrbf | pyrbf | PCU (Parallel Control Utility)
- Fastmath | PetFMM | p4est: parallel AMR on forests of octrees | LAMMPS | Zoltan (Doc) | pyzoltan | Peano: a framework for solvers on spacetree grids | m-a-d-n-e-s-s | Scalable Fast Coulomb Solvers
- 2DECOMP & FFT | FFTW | FluidFFT | pyFFTW | OpenFFT | AccFFT | PFFT | P3DFFT | fftwpp | SFFT
- The Trilinos Project | Global Arrays | DASH | Software for sparse direct methods | DIME(Data Local Iterative Methods) | ACTS collection | CLAWPACK
- NIMROD - Non-Ideal Magnetohydrodynamics with Rotation | Lare3d | M3D | AstroGK | BEARCLAW | ForestClaw
- AMROC | CASTRO (Radiation Module) | MAESTROeX | NYX | CLAMR | FVENS | PENNANT
- MCSTL | MGNet | SOPHYA | ALPS project | Free POOMA | DUNE | Agros2D | Life
- CCSE Software | Computational Infrastructure for Geodynamics | STXXL | ExaFMM | ScalFmm | petfmm | pyfmm | gemsfmm | Dedalus
- PyFR | Fluidity | OFF: Open source Finite volume Fluid dynamics code | MFIX | CFD Utilities
- Pyramid | DukeAMR | DAGH | SAMRAI (Document, Extensions Repository) | PARAMESH | CHOMBO | Versatile Advection Code
- SMAUG | EPX | Code_Saturne (Wiki) | Typhon | ALSVID-UQ
- Piernik | AstroBEAR | mapcode | PPM at UMN | Dolfyn.net | OpenFVM | AMRMHD3D | Code_Saturne | TPO++
- PPM | libparty | pypm | PEPC | FiPy | Escript | Gerris
- DCCRG | BoxLib | AMR-based projects | Adaptive Mesh Refinement Resources | MUSE(Multiscale Multiphysics Scientific Environment) | AstroSim
- DEISA benchmarking codes | Hydro benchmarking codes | The Model Coupling Toolkit | StarPU (task programming library for hybrid architectures) | Uintah (CRSim)
- ESIO | SIONlib | libSplash | pyDive
- SPHysics | pysph | SOFA: Simulation Open Framework Architecture | Spheral++ | spheric | LMGC90
- Mesh (or FEM): libMesh (GitHub releases) | APF (Attached Parallel Field) | Gmsh | Mechsys | MeshGenC++ | MeshKit | Triangle++ | MeshPy | mmg | fempy | FEniCS Project | oomph-lib
- FEM (or Mesh): Finite Element Modeling and Analysis Glossary | deal.II | MFEM | NEKTAR++ | EFISPEC | GLVis | Impact | freeFEM.org | hpFEM.org | Feel++ | parafem | SU2 | PyOP2 | SfePy | Triangle | TetGen | ViennaGrid | ViennaMesh | Nodal Discontinuous Galerkin Methods | Hedge | PHASTA | meshio
- Rendering: Blender (VTK and Blender) | Mitsuba | POV-Ray | YafaRay | LuxRender | OpenSceneGraph | visvis | exposure-render | Embree | MINILIGHT

* Data-intensive computing and Cloud computing
- A curated list of awesome big data frameworks, ressources and other awesomeness.
- Chirp | Parrot | Makeflow | HyperLoom | Work Q | Kepler Project | Celery | Cherami | RabbitMQ | OGSA-DAI | SAGA Project | BlobSeer | BLCR
- scoop | soma-workflow | Taskflow(for C++) | Queues | Jug | Pagoda | asyncoro: Asynchronous, Concurrent, Distributed Programming with Python | dispy: Distributed and Parallel Computing with/for Python | load_balance
- Spatio-temporal data: spatial-analysis.net | GEOSTAT courses | GMT (Generic Mapping Tools) | SpaceBase | GeoSpark
- Spatio-temporal data: Nanocubes | GeoMesa (confluence page, github page) | GeoWave | PostGIS (Introduction to PostGIS) | MongoDB | Crate.io | CartoDB | OSGeo.org | GeoTools
- Nimbul | Gearman | Oozie | Azkaban | Krati | redis (geospatial indexes)
- xrootd/cmsd | HadoopXrootd | dCache.ORG | CASTOR | S4 | Stork | hyracks | ADIOS | Apache Spark (SparkR) | Tajo
- ANKUS | HERON | Storm | Hadoop | myHadoop | pydoop | RHadoop | Hadoopy | MR4C | RHIPE | MapReduce | MapReduce-MPI Library | Phoenix | Simba: Spatial In-Memory Big data Analytics | Serf | ZooKeeper
- NOSQL Databases | HBase | Accumulo | Cassandra | Hive | Pig | Mahout | MADlib | Voldemort | Cascading | coord | iRODS | neptune
- SQLite | SpatiaLite | pyspatialite | MemSQL
- mrjob | PANDA | dumbo | Cloud9 | hipy | luigi | Dask.distributed | Dask
- Occi | openstack (Korean community) | CloudStack | Docker | PFunc | Twister | Eucalyptus | OpenNebula.org | Usher | Nimbus
- Tree: libssrckdtree | libkdtree++ | kche-tree | kdtree | Octree C++ | libspatialindex (Python binding) | Rtree | RTree
- Tree: Point Cloud Library | tinyr | R-Tree Library | zope.index.rtree | TPIE | M-tree | mtree | mtree-port
- Tree: pyrtree | Priority R-Tree | R* Tree | kdtree2 | KDTREE | python-kdtree | Kd-Tree | kdcount
- Tree: Gamera kd-tree | DENDRO | Python VP-tree | FLANN | nanoflann | ANN | pyANN
- Indexing: SAMtools
- File systems: Ceph | Alluxio | OpenAFS | Lustre | PVFS | HDFS | ZFS on Linux | Btrfs | EXT4 | XFS | Gluster FS | XtreemFS | IOzone | Btrfs Benchmarks | Btrfs Performance Analysis | Where The Btrfs Performance Is At Today
- DRMAA | Grid Engine | Swift | Condor | Mechanic | Job Scheduler | OWL | Pegasus | Airflow | ecFlow | FireWorks
- Airavata | s4pm | Taverna | Thrill | JMS | SEASR
- xCAT | Xen | KVM | VirtualBox.org | Rocks | oVirt | CernVM
- Active Storage | FastBit | Berkeley Storage Manager (SDM at Berkeley) | Sector/Sphere | Disco Project
- ADLB(Asynchronous Dynamic Load Balancing) | Eden | Gfarm | XTREEMFS | Puppet | Chef
- Time-series data: Graphite | OpenTSDB | SiriDB | M3DB | KairosDB | Chronix | InfluxDB | InfiniFlux
- Data transfer: How to transfer large amounts of data via network. | ESnet Fasterdata Knowledge Base | Enabling High Performance Data Transfers
- Data transfer: bbcp | FDT | bbftp | UDT | rapidant | GridFTP | HPN-SSH | rsync | Netcat | Globus Online | gLite File Transfer Service | mistamover
- XLDB (Extremely Large Databases) (astronomy cases) | MonetDB | SciDB | SCILENS | MySQL | Vitess | MariaDB | Sitools2
- Magellan: NERSC Cloud Testbed | NASA Nebula | Science Clouds
- Open Science Grid (Education/Workshops, SoftwareTools) | Clouds and Cloud Technologies for Data Intensive Science
- Center for Astrostatistics | CHASC Astro-Statistics Collaboration
- ESO REFLEX | Youpi | ESO Recipe Execution Tool | ESO MVM | THELI | Astrometry.net | SDSS processing software | LSST data management

* Online Computer Document Resources
- The Architecture of Open Source Applications | Software Carpentry | Howtoforge
- nixCraft | TechSource | DigitalOcean Community | MDLog:/sysadmin
- Lmod: Environmental Modules System | Environment Modules Project | Spack: flexible package manager | Conky Reference with Examples
- Vim Cookbook | Vi Command Summary | jEdit | JLatexEditor | BlueGriffon
- VAMP Virtual Astronomy Multimedia Project | Man page of Image Magick | Examples of ImageMagick Usage | Fred's ImageMagick Scripts
- scikit-image | Python Image Library (PIL) | Pillow | Mahotas | Python Computer Graphics Kit
- Gimp (Korean Doc, English Doc) | GIMPguru.org | GIMPTalk.com | Krita | G'MIC
- NASA Vision Workbench | Teem | Voreen | CImg Library | OpenCV (OpenCV-Python tutorials) | imageio | SimpleCV | G'MIC | OpenImageIO
- BIAS (Basic Image AlgorithmS Library) | VIPS | FreeImage library (FreeImagePy, smc.freeimage)
- MIA | ExactImage | Orfeo Toolbox | ITK | MITK | elastix
- babl | GEGL | Gandalf | LImUn | BLEPO | RAVL | VIGRA | VXL | Imagine++ | openMVG | IVT | DevIL | openFrameworks | Cinder
- source navigator | GNU cflow | Valgrind | kcachegrind | CodeViz | Doxygen ( Fortran, C/C++, Special Commands) | SLOCCount
- LCOV | DejaGnu | Greg testing framework | Buildbot | Hudson | MAQAO | CruiseControl
- GNU gprof | uftrace | IgProf | egypt | CallTreeGenerator | Gprof2Dot
- Google Style Guides | ShellCheck | OCLint | cpplint | Cppcheck | Splint | NsiqCppStyle | KWStyle | cxxchecker | pep8
- Memory investigation: volatilitux | volatility | Stack Trace Analysis Tool | draugr | crash
- Autoconf | Automake | CVS manual | CVS-RCS-HOWTO | Version Control with Subversion | SVN tutorial for Unix
- Git reference | Git | GitLab | GitGuys.com | Flight rules for git | git ready
- CDash | python-mirbuild | Buildbot | SW Test Automation Framework
- Linux programming | GNU coding standards | GCC online documentation | Intel compilers (Documents: Fortran and C/C++)
- Programming in C | C Programming Notes (part 1) (part 2) | C Language Tutorial
- The C book | The C Library Reference Guide | UNIX System Calls and Subroutines using C | C Programming Language Tips
- c prototyping tools | Algorithms and Data Structures(NIST) | Big-O Algorithm Complexity Cheat Sheet | The Algorithm Visualization Portal | The Stony Brook Algorithm Repository
- Random numbers: Randomlib | PRNG
- SGLIB - A Simple Generic Library for C | GDSL - The Generic Data Structures Library | libdict | XanLib
- Open Data Structures | Algorithmist | uthash | GNU libavl | libconfig | IMath | The GNU C Library
- C++ Tutorial | C++ tutorial | C++ Programming | C++ Tutorial | C++ FAQ | More C++ | cplusplus.com
- C++ Summary | C++ Reference | C++ Core Guidelines | Fluent C++ | C++ links (Cambridge) | C++ STL | LearnCpp.com
- Computational Geometry Algorithm Library | libigl | Digital Geometry Tools and Algorithms | boost C++ library | (The Boost C++ Libraries) | Eigen | Blitz++
- Wykobi Computational Geometry Library | odeint | ESMF: Earth System Modeling Framework
- LTI-Lib | MATPACK C++ | Xerces-C++ | muParser | GOBLIN | libmoost | last.json | MLC++ | CLN | OpenVIDIA | dlib C++ Library | IT++
- infact | POCO C++ libraries | IML++ | LAWA | SparseLib++ | Armadillo | threadpool | ALGLIB | libcwd
- Fortran 77 standard | Fortran 77 Tutorial | Programmer's Guide to F77 | Fortran 77 for beginners
- Fortran materials | Fortran 90 Tutorial | Fortran Wiki
- Fortran 90 for the Fortran 77 Programmer | Fortran 90 Lectures | Advanced Fortran 90
- Compact Fortran 95 Language Summary | Alphabetical Index of FORTRAN Statements and Attributes
- FLIBS-A collection of Fortran modules | FGSL | FortLua | Alan Miller's Fortran Software | aotus | f90depend | FCM
- FRUIT (FRUITPy) | funit | pFUnit | Lib_VTK_IO | FoBiS | PreForM | fmake | FLAP | IR_Precision | Awesome Fortran
- Java Practices | Java SE 6 Documentation | Java Platform, Standard Edition 6 API Specification
- Java: A Beginner's Tutorial | Java: The Good Parts | Fundamental Networking in Java
- Using C/C++ and Fortran together | GDB documentation | GDB Command Cheat Sheet
- Python Documentation | Real Python | The Hitchhiker’s Guide to Python | PyMOTW index | Python Scientific Lecture Notes | NumPy reference guide | Numpy Example List With Doc
- IPython (Notebook viewer): load_balance_ipython | ipython-monitor | IPyDocker | Anaconda (documentation) | Conda documentation
- theano | HOPE | SymPy | Theano | SciPy (Scipy Lecture Notes) | (AstroLib) | Blaze | Pandas | Bokeh | gleam | VPython | Astrophysics utilities for python | Python cookbook
- PyVista | PySpectrum (Doc) | MS-DAS (Mass Spectrometry Data AnalysiS) | scikit-spectra | PyWavelets | bcolz | PyTables | Vaex.io | datatable
- PyAstronomy (PyA) | Kapteyn Package | Carnegie Python distribution | lmfit-py | Bumps | fityk | pypeaks | PeakUtils | HyperSpy
- PyFITS | PySpecKit | AstroAsciiData | SimPy | PyDy | Numba | pyvisfile | ArviZ | Seaborn | Matplotlib (color map 1D, color map 2D)
- Vispy | Manim | Visdom | Glumpy | MPLD3 | python-nvd3 | Glue | PyQtGraph | Cartopy | Fatiando a Terra | pydy | windspharm
- Scrapy | pygeocoder | Pydap | Yahoo Python developer network | Cython | Pyston | A Python/Perl phrasebook
- SQLAlchemy | SQLObject | Storm | Elixir
- PostgreSQL: PostgreSQL (manuals) | PostgreSQL tutorial | Wiki | TutorialsPoint for PostgreSQL | Tutorial in w3resources | Postgres Guide | Tutorial in TechOnTheNet
- Python 2.5 Quick Reference | O'REILLY Python DevCenter | ASPN Python Cookbook | PythonForBeginners | Python tutorials | Dive Into Python | Full Stack Python | Python Cookbook
- An Introduction to the C shell | tcsh Manual | Bash Reference Manual
- Bash Guide for Beginners | Advanced Bash-Scripting HOWTO | Advanced Bash-Scripting Guide | Bash Hackers Wiki
- UNIX Power Tools | commandlinefu.com | [shell-fu]$ | The GNU Awk User's Guide
- Beautiful Soup | html5lib-python | mechanize | jq | Mako
- H5utils | HDF5 (Doc) | H5Part | H5hut (HDF5 Utility Toolkit) | NetCDF (Doc) | Silo
- VTK | PyEVTK | Liv_VTK_IO | VTK_IO | PyVTK
- Cubature | Cuba library | vegas | HIntLib
- Hypertext Help with LaTeX | The Not So Short Introduction to LATEX2e | LaTeX Command Summary
- LaTeX Symbols | LaTeX Fonts | WIKIBOOKS LaTeX | Bibtex Templates | Working with BibTeX
- Advanced LaTeX | Using imported gracphics in LaTeX and pdfLaTeX | Graphics and Colour with LaTeX | TeX & LaTeX resources | LaTeX Beamer class
- RGB color codes | ColorPicker.com | Using colors in R | Chart of R Colors | Chroma
- AAS TeX guide | ApJ Instructions to Authors | ApJL Instructions to Authors | ApJ Subject headings
- The OpenOffice.org Wiki (Documentation) | LibreOffice documentation
- IDL Tutorial | IDL Help: Contents | Online help : functiion list | Statement syntax | Libraries Browser | IDL cookbook
- Contents of IDL Astronomy User's Library | Coyote and Catalyst IDL Libraries | IDL for Astronomers | Coyote's Guide to IDL Programming | IDL color table
- Web server: mongoose | Monkey web server | Lighttpd | Cherokee web server | nginx | oddjob | local-web-server
- Firefox OS: ZTE General Discussion in MoDaCo | Mozilla Developer Network - Firefox OS | Community builds for the ZTE Open C EU (Bug list) | Firefox OS Guide | Firefox OS Devices | Firefox OS Books | Firefox OS Club | Quick Guide For Firefox OS App Development | Firefox OS Tutorial | Building Firefox OS | ffos-cli | Firefox Marketplace | Linux Remote Control (GitHub)
- Web development: CherryPy — A Minimalist Python Web Framework: tutorialspoint, examples
- Web development: Mozilla Developer Network | W3Schools | HTML5 Doctor | Dive Into HTML5 | HTML5 Tutorial | Emoji cheat sheet
- Web development: dadabik | LIMBAS | PHP | CakePHP | Zend | Yahoo PHP developer center | SQL tutorial | CSS tutorial
- Web development: jsFiddle | JavaScript tutorial | Dynamic Drive DHTML | Typetester | Font comparer | Open Clipart Library | Awesome Stock Resources
- Web development: Ushahidi | CanvasXpress | prefuse | D3.js | D3plus | spacekit | D3-Celestial | D3-Orrery | VirtualSky | SkySphere | three.proton | vis.js | Chart.js | three.js | jQuery | jQuery Mobile | Kartograph.org | SproutCore | MooTools
- Web development: Prototype JavaScript framework | Dojo Toolkit | Cesium | flot | volumetric.js | Dracular Graph Library | billboard.js | Paper.js | ruse.js
- Web development: fancyBox | device.js | Backbone.js | AngularJS | Ractive.js | Polymaps | Metro JS | jQuery Metro Plugin | bootmetro
- Web development: SlidesJS | LIVEPX | dygraphs | TweenJS | SoundJS | EaslJS | Modernizr | fitsjs | jsFITS | Aladin Lite
- Web development: flambe | PhiloGL | GLGE | J3D | Potree | luma.gl | deck.gl | The X Toolkit: WebGL for Scientific Visualization | IIPImage and VisiOmatic
- Web development: Mozilla Webmaker (Popcorn Maker, Thimble, X-Ray Goggles, Appmaker) | MagpieRSS: RSS for PHP | Icon Archive | Find Icons | Piwik
- Web development: Apache Cordova | Adobe PhoneGap | Electron | Ionic | Meteor | Grunt | Yeoman | Bootstrap | Flight | Flat UI | Gumby
- Web development: Packery | Isotope | Masonry | Blocksit.js | jquery-flex | Wookmark-jQuery | Freetile | MediaGoblin | selfoss | PhantomJS | YUI Library | Better Web Korea
- Web development: ckan | Crossfilter | Cube | Epoch | CodeIgniter | phpMyAdmin | jSpyDB | DataTables | Cubism.js | RRDtool
- Web development: Flask | Bottle | Connexion | TangeloHub | Moksha | Jinja | web2py | Pylons Project | Nikola | Grav | FlatPress
- Web development: Pelican Static Site Generator | Brunch | StaticGen | htmltmpl | feedparser | Requests: HTTP for Humans | Planet Feed Reader
- Web development: Aloha Editor | Mercury Editor | Aptana | Brackets | Bluefish Editor | Atom | KompoZer | BlueGriffon | Maqetta | Mixeek
- Web development: videojs-playlist | jPlayer | HTML5 Music Player | Able Player | bbplayer | MediaElement.js | mtAudioPlayer | html5media.info | Wimpy Player | audiojs | wavesurfer.js
- Web development (blog-like sites): HTML5 Rocks | HTML Goodies | Smashing Magazine | Onextrapixel | SitePoint | CodeVisually | Tutorialzine | Tuts+ | Tech.pro - tutorials | IWCN blog | NARGA | The Javascript Playground | DevelopPHP | Web Development Tutorials
- Wiki/CMS/Blog: WikiMatrix | bitweaver | DokuWiki | Foswiki | MediaWiki | Tiki Wiki | Drupal | Joomla | CMS Made Simple | Plone | WordPress.ORG | XpressEngine | KIMSQ | Textcube
- Supermongo Reference | Official GNUplot online document | Gnuplot 4.0 Tutorial | GNUPLOT : not so Frequently Asked Questions
- PGPLOT Manual | PLplot | WIP User's Manual | DISLIN manual | DISLIN document | MathGL
- Grace User's Guide | Grace Tutorials | XGobi man page | XGvis man page
- GNU Scientific Library | The HSL Mathematical Software Library | NAG Numerical Libraries | IMSL Numerical Libraries
- Numerical Recipe | Matpack C++ Numerics and Graphics Library | GooFit | Voro++ | FLENS | PhysBAM
- Biwavelet | SpanLib | Spectral Analysis in Python | SHTOOLS - Tools for working with spherical harmonics
- ftensor | General Spectral Method Library | CodeCogs | Collection of Software Bugs
- Introduction to Maple | Maple tutor | Wikibook: Maple | Maple reference card | OpenModelica
- Sage: Open Source Mathematics Software (Reference Manual) | MATLAB documents | MATLAB summary and tutorial
- Astroconda | IRAF Help pages (University of Bonn, Germany) | STSDAS Help Pages (STScI) | Introduction to IRAF | GMOS Data Reduction Cookbook
- ESO-MIDAS Documentation | Starlink Documentation | STILTS | Starlink github
- Astromatic.net (SExtractor, STIFF, SWarp, etc.) | Virtual Astronomy Multimedia Project | Adobe XMP Developer Center
- python-xmp-toolkit | ESA/ESO/NASA FITS Liberator | SAOImage DS9 | Ginga | Toyz
- Astropythong | astropy | SkyPy | astLib | Practical Python for Astronomers
- specreduce | pysalt | pyhrs | zSALT | Barak | ir-reduce | rajin_code | reproject | cube-tools | cube-viewer
- APLpy | pyavm | FUNTOOLS | WCStools | WCSAxes | CFITSIO | Montage | TARA package | Specview | SEP
- YACHT (Yonsei Astronomy Computing How-To) | Oxford University Astrophysics Wiki | Princeton Astro. Comp.
- Linux Packages Search | RPM search for SuSe Linux | SuSe Geek | LinuxSelfhelp.com | Korean Linux User Group
- Linux distributions: LinuxLive USB Creator | DistroWatch.com | Mint | Sabayon Linux | openSUSE (Korean community) (Documentation) | fedora (Korean community) | CentOS (RHEL documentation) | Scientific Linux | Arch Linux (Wiki) | Gentoo Linux (Wiki) | PCLinuxOS | Rocks Clusters | ZeptoOS | Ubuntu (Korean community) | lubuntu | xubuntu
- Linux distributions: Linaro | ClearOS | Zentyal | SmoothWall Express | ZEROSHELL | NetSecL | ipfire | BackTrack Linux | SystemRescueCd | Clonezilla | Redo Backup and Recovery | fogproject.org | Mondo Rescue
- Linux distributions: Kali Linux | Whonix | Vyatta | IPCop | pfSense | Untangel | BackBox Linux | Finnix | Network Security Toolkit | OpenMediaVault | Superb Mini Server | FreeNAS | NAS4Free | Openfiler
- Linux on USB: Debian and Tails - Build a persistent Debian USB drive | Installing Debian on a USB stick (from a running Debian system) | Installing Debian GNU/Linux from a Unix/Linux System
- OpenBox/FluBox: CrunchBang Linux | ArchBang | CTKArch | Ultimate Edition | Tiny Core Linux
- Security: KR-CERT | US-CERT | NSA OS security guide | AhnLab stat. | CERT NetSA Security Suite | Firewall Builder | Armitage | www.blocklist.de | w3af | Surveillance Self-Defense | Tor Project
- OpenDNS | ip2location | ViewDNS.info | Robtex | IP Address Lookup | Subnet mask calculator | DomainTools | Country IP Blocks | WIPmania | MS-ISAC Digital Dashboard

- Log/security: Suricata | Wireshark | Fail2ban | SSHGuard | fwlogwatch | Logreporers | GoAccess | Metasploit | apache-scalp | AWStats | glTail.rb | AIDE | Rootkit Hunter | Web Robots | MS Malware Protection Center | Darik's Boot and Nuke
- Hardware: MAXIMUMPC (PDF archives) | Tom's Hardware | Hardware.Info | PCMech | Gigglehd.com | KBench | PC Perspective | The Tech Report | AnandTech | PCPARTPICKER | How to build a PC
- Networks: XROXY.COM | Cable Map | Submarine Cable Map | KREONET | KOREN (Korea Advanced Research Network) | KREN | KORNET | Internet2 | Pacific Wave | ESnet | USN | APAN | NREN | GLORIAD | Ultralight | Pacific Northwest Gigapop | AARNET (Australia's Academic and Research Network) | KAREN | CANARIE | SINET | TransPAC2.net | TWAREN | TEIN3 (Korea - Australia) | TEIN4 | GEANT | GEANT2 | JANET | Michigan LambdaRail (MiLR)
- Monitoring: Ganglia | Zabbix | Nagios | Munin | Open Monitoring Distribution | Monitorix | Observium | Pandora FMS | System Garden | SisIYA | psutil | psdash | yasmon | ZMON | pydash | graph-explorer | graphene | tasseo | graphiti | descartes | Grafana
- Embedded/robot programming: Embedded Linux Wiki | LinuxGizmos.com | OpenSEED | Korea Embedded Linux Project | Emdebian | QEMU open source processor emulator | OpenEmbedded | mbed | Intel Maker | ${animal}board.org | Origenboard.org | ODROID: Hardkernel | UDOO | Radxa | Arduino | ARTIK | Instrumentino | Pinguino | BeagleBoard.org | minnowboard.org | SHR | Yocto Project | KaeilOS | The Angstrom Distribution | Raspberry Pi | python-on-a-chip | Dronecode | Let's Make Robots! | ROS.org | The Orocos Project | LCD4Linux | ROBOTIS | Johnny-Five | Adafruit (learning system) | SparkFun | Instructables | Free Electrons | OpenMotics | Oregano | LCD Smartie
- GPS, GIS, and maps: GPSd | OSGeo FOSS-GPS | MapTools.org | FoxtrotGPS | ModRana | GPSTk | gpsimage | pynmea | pynmea2 | osm-gps-map | RTKLIB: An Open Source Program Package for GNSS Positioning | Natural Earth | GPSTk | switch2osm | i2maps | Real-time GPS Satellite Positions in 3D | OpenLayers | QGIS | mapnik | geoplotlib | JOSM (LiveGPS) | GPS Visualizer | OBD GPS Logger | Kartograph.org | townguide | MapPDF | smrender | Metro UI template | Leaflet | Folium | Modest Maps | Mapbox | GeoJS | Tangram
- GIS for astronomy: IAU Working Group for Planetary System Nomenclature GIS Data | U.S.G.S. Planetary GIS Web Server
- RTL-SDR: rtl-sdr at OsmoSDR | GNU Radio (Repository, Wiki) | The Comprehensive GNU Radio Archive Network | RTL-SDR.COM | GNSS-SDR | gr-air-modes | rtl-entropy
- RTL-SDR: dump1090 | dump1090-sqlite | RTLSDR-Airband | RTL-SDR experimental branch | rtlsdr-waterfall | pyrtlsdr | RTLSDR-Scanner
- RTL-SDR: inspectrum | radio-astronomy-fftw | GUI for RTL_POWER | Signal Identification Guide
- Company engineering or open source sites: Airbnb | Facebook | Netflix | Intel | Twitter

* Observation Program
- The DECam Legacy Survey
- ALHAMBRA: Advanced Large, Homogeneous Area Medium Band Redshift Astronomical Survey
- DEEP Redshift Survey
- Deep Lens Survey (DLS)
- NOAO Deep Wide-Field Survey (NDWFS)
- Multiwavelength Survey by Yale-Chile
- GEMS:Galaxy Evolution From Morphology And SEDs
- COMBO-17
- SkyMapper Southern Sky Survey
- RESOLVE
- The SAMI Galaxy Survey | CALIFA | GAMA
- GOODS: The Great Observatories Origins Deep Survey
- COSMOS
- GOALS: The Great Observatories All-Sky LIRG Survey
- Millennium Galaxy Catalogue
- CFHT Legacy Survey
- The NRAO VLA Sky Survey | (Catalog browser)
- The VLA Low frequency Sky Survey | (Catalog browser) | (Postage stamp)
- The VLA FIRST Survey | (Catalog Search) | (Image cotout)
- The VLBA Imaging and Polarization Survey
- Sydney University Molonglo Sky Survey
- The UKIRT Infrared Deep Sky Survey | WSA-WFCAM Science Archive
- SuperCOSMOS Sky Surveys
- Hubble Legacy Archive

* Research Institute
- Korean Astronomy and Space Science Institute
- Max Planck Institute for Astrophysics
- Max Planck Institute for Astronomy
- Center for Astrophysics & Space Sciences, UCSD
- Herzberg Institute of Astrophysics
- Harvard-Smithsonian Center for Astrophysics (CFA)
- Infrared Processing and Analysis Center, Caltech&JPL
- Kapteyn Institute
- Space Telescope Science Institute
- Center for Adaptive Optics, University of California
- Center for Astronomical Adaptive Optics, University of Arizona
- MIT Center for Space Research
- Theoretical Astrophysics Center, UC Berkeley
- ASIAA : Academia Sinica - Institute of Astronomy and Astrophysics
- Canadian Institute for Theoretical Astrophysics (CITA)
- Institute of Astronomy
- Astronomical Institutes of Bonn University
- Institute for Astronomy, University of Hawaii
- Joint Institute for Laboratory Astrophysics
- Sternberg Astronomical Institute
- Space Telescope Science Institute
- Center for Space Research
- The Institute of Space and Astronautical Science
- Institute of Astronomy, Russian Academy of Science
- IRAM : Institut de Radio Astronomie Millimetrique
- Institut d'Astrophysique de Paris

* University
- University of Hawaii Astronomy
- Dept. of Astronomy, Univ. of Maryland at College Park
- Department of Astronomy, Univ. of Arizona
- Univ. of Washington Astronomy
- Univ. of Massachusetts Astronomy Program
- Dept. of Astrophysical Sciences, Princeton University
- Caltech Astronomy
- UC Berkeley Astronomy
- Cornell Univ. Astronomy
- Department of Astronomy, Ohio State Univ.
- Department of Astronomy, Univ. of Texas, Austin
- Department of Astronomy, Univ. of Illinois at Urbana-Champaign
- Department of Astronomy and Astrophysics, UC Santa Cruz
- Department of Astronomy, New Mexico State Univ.
- Australian National University Astronomy Program
- Dept. of Astronomy, Cambridge University
- Columbia University Astronomy Program
- Harvard University Astronomy Program
- Department of Physics and Astronomy, Johns Hopkins University
- Dept. of Astronomy, Yale University
- Oxford University Astronomy Program
- Dept. of Astronomy & Astrophysics, Univ. of Chicago
- Dept. of Physics and Astronomy, Univ. of North Carolina
- Dept. of Astronomy, Univ. of Virginia
- Dept. of Astronomy, Univ. of Wisconsin-Madison
- Department of Physics and Astronomy, UC Irvine
- Department of Physics and Astronomy, UCLA
- Physics and Astronomy Department, Michigan State University
- Department of Astronomy, University of Michigan
- Department of Physics and Astronomy, Iowa State University
- Department of Astronomy & Astrophysics, Penn State University
- Department of Physics and Astronomy at University of Pennsylvania
- Department of Astrophysical and Planetary Sciences, University of Colorado, Boulder
- MIT Astrophysics Division
- Department of Astronomy & Astrophysics, University of Toronto
- Department of Astronomy, University de Chile
- Department of Astronomy and Astrophysics, Pontificia Universidad Catolica de Chile
- Department of Astronomy, University of Concepcion

* Program Development Resources
- ActiveState Programmer Network | ActiveState Code | PROGRAMMERS HEAVEN.COM
- Internet Related Technologies | thefreecountry.com | Cprogramming.com | Planet Source Code
- krugle | Launchpad | Google code | github | freshmeat.net | SourceForge.net
- Nullege | Ohloh (code search) | ProgrammableWeb

* Media
- KBS | MBC | SBS
- Korea Times | Korea Herald | Radio Korea International | The Seoul Times | YBM FM | Arirang TV
- CNN | NBC | CBS News | ABC News | BBC America | PBS ( FRONTLINE) | VOA | NPR ( Hidden Brain)
- Hulu | MVIBO
- This American Life
- Living on Earth

* Educaton and Teaching
- GRP (Good Research Practice) | UK Research Integrity Office | CopyKiller | Yonsei CEDS | Ewha ITL | KAIST CTL | POSTECH CEE | SNU CTL | Korea CTL | HUFS CTL
- UMich CRLT | Princeton McGraw Center | Harvard Derek Bok Center | MIT TLL | UChicago CTL | Stanford CTL

* On-line lectures/colloquium
- FermiLAB Streaming Video Service | Web Lecture Archive Project | KITP Online Program
- Information Center for Physics Research(ICPR) | Stanford Linear Accelerator Center Online Videos
- Goddard Space Flight Center Scientific Colloquium | STScI Webcasting | CfA Colloquium
- CERN Document Server(CDS) | MIT World | Google Tech Talks | Research Channel
- VIDEOLECTURES.net | Coursera | Academic Earth | MIT OpenCourseWare | KOCW | CosmoLearning | PopTech | Forum Network | ideacity

* Korean web sites for foreign people
- WebSubway of Seoul | nanoomi.net (Sharing Korean Life, News and Blogs) | Soguri: culture and travel map
- Frank's Korean Studies Portal | Korean Histories
- The Academy of Korean Studies | Yuldo.net: A Korean Studies Site | KRPIA (Institute for the Translation of Korean Classics)
- Tour2Korea: official Korea Travel Site | Travel Blogs - South Korea | Seoul Culture & Tourism
- Korean films: Korean Film Archive | KOREAN CINEMA EDITION | Darcy's Korean Film Page | Popular Korea movies on IMDb
- Dramabeans | Korean dramas from DramaFever on Hulu | Korean dramas from Viki on Hulu
- Kpop: allkpop | Daily K Pop News | GoKpop | SarangKpop | K-popped! | HOTSPICYKIMCHI
- Kpop: soompi | SEOULBEATS | KoME | Koreaboo | KPOP.FR | KoreaFilm.ro | Korean Connection | Eat your Kimchi
- Kpop: Galbijim - for those living, working, and travelling in Korea | Seoulstyle.com | Seoul Eats
- Cyber Korean School | The National Institute of The Korean Language | Talk To Me in Korean | Korean Language Study on the interNET
- Korean History Project | Korean Spirit and Culture Promotion Project
- Korean-American Scientists and Engineers Association
- Koreana Webzine | Korea.net (Blog) | Korean Inspiration | KOFICE
- Ask a Korean! | Korean word of the week
- KBS World (Youtube) | Arirang (News on Youtube, Entertainment on Youtube)