| Library name |
Programming language |
Open-source license
|
| Accord.NET libraries |
C# |
LGPLv3, GPLv3
|
| Apache Lucene |
C# |
Apache 2.0
|
| ASP.NET Core |
C# |
MIT
|
| Dapper ORM |
C# |
Apache 2.0
|
| EDXL Sharp |
C# |
MIT
|
| Framework Class Library |
C# |
MIT
|
| Infer.NET |
C# |
MIT
|
| Math.NET Numerics |
C# |
MIT
|
| ML.NET |
C# |
MIT
|
| NHibernate |
C# |
LGPL-2.1
|
| OpenTK |
C# |
MIT
|
| SignalR |
C# |
MIT
|
| Standard Libraries (CLI) |
C# |
MIT
|
| Apache Portable Runtime |
C |
Apache 2.0
|
| Automatically Tuned Linear Algebra Software |
C, Fortran |
BSD License
|
| Binary File Descriptor library |
C |
LGPL-2.1-or-later
|
| C POSIX library |
C |
LGPL, MIT, BSD
|
| C standard library (libc) |
C |
ISO/IEC 9899
|
| Cairo |
C |
GPLv2
|
| Chipmunk |
C |
MIT
|
| Core Foundation |
C |
Apple Public Source License
|
| DirectFB |
C |
LGPL-2.1
|
| Expat |
C |
MIT
|
| Fast Artificial Neural Network |
C |
GPL
|
| FFmpeg |
C |
LGPL/GPL
|
| FreeTDS |
C |
MIT
|
| FreeType |
C |
FTL
|
| Fontconfig |
C |
MIT
|
| GD Graphics Library |
C |
MIT
|
| GDK |
C |
LGPL-2.1
|
| GEGL |
C |
GPL-3.0
|
| GIO |
C |
LGPL-2.1
|
| GLib |
C |
LGPLv2.1
|
| GNet |
C |
LGPL-2.1
|
| glibc |
C |
LGPL-2.1-or-later
|
| GNU Libtool |
C |
GPL-3.0
|
| GNU Multiple Precision Arithmetic Library |
C |
GPL-3.0
|
| GNU portability library |
C |
GPL-3.0
|
| GNU Portable Threads |
C |
LGPL-2.0
|
| GNU Readline |
C |
GPL-3.0-or-later
|
| GNU Scientific Library |
C |
GPL
|
| GnuTLS |
C |
LGPL-2.1-or-later
|
| GObject |
C |
LGPL
|
| GTK library |
C |
LGPL-2.1+
|
| GTK Scene Graph Kit |
C |
LGPL-2.1
|
| IUP |
C |
MIT
|
| Libart |
C |
LGPL-2.0-or-later
|
| libavcodec |
C |
LGPL-2.1
|
| libcurl |
C |
curl License/MIT
|
| libdca |
C |
GPL-2.0
|
| libevent |
C |
MIT
|
| libffi |
C |
MIT
|
| libfixmath |
C |
MIT
|
| libjpeg |
C |
Custom BSD-like
|
| Libpcap |
C |
BSD-3-Clause
|
| libpng |
C |
libpng License
|
| LibRaw |
C |
GPL-2.0
|
| LibreDWG |
C |
GPL-3.0
|
| LibreSSL |
C |
ISC
|
| Librsvg |
C |
LGPL-2.1
|
| libsndfile |
C |
LGPL-2.1
|
| LibTIFF |
C |
LibTIFF License
|
| libusb |
C |
LGPL-2.1
|
| libuv |
C |
MIT
|
| Libt2n |
C |
GPL-2.0
|
| LibVNCServer |
C |
GPL-2.0
|
| libvpx |
C |
BSD-2-Clause
|
| libxml2 |
C |
MIT
|
| libxslt |
C |
MIT
|
| Little CMS |
C |
MIT
|
| LZFSE |
C |
Apache 2.0
|
| Mbed TLS |
C |
Apache 2.0
|
| Mesa |
C |
MIT
|
| MsQuic |
C |
MIT
|
| MuJoCo |
C |
Apache 2.0
|
| MuPDF |
C |
AGPL-3.0
|
| Mustache |
C |
MIT
|
| ncurses |
C |
MIT
|
| Netpbm |
C |
MIT
|
| Nettle |
C |
GPL-2.0-or-later
|
| Newt |
C |
MIT
|
| nghttp2 |
C |
MIT
|
| Oniguruma |
C |
BSD
|
| OpenGL Utility Library |
C |
SGI Free Software License B
|
| OpenJPEG |
C |
GPL-2.0
|
| Oracle Berkeley DB |
C |
Dual-licensed GNU AGPL
|
| Pango |
C |
LGPL
|
| Perl Compatible Regular Expressions |
C |
BSD
|
| PROJ |
C |
MIT
|
| libpthread |
C |
GPL-2.0-or-later
|
| raylib |
C |
zlib
|
| Seed |
C |
MIT
|
| Simple DirectMedia Layer |
C |
Zlib License
|
| SVGALib |
C |
LGPL-2.1
|
| Systemd libraries |
C |
LGPL-2.1-or-later
|
| Tk |
C |
BSD-style
|
| UMFPACK |
C |
LGPL-2.1
|
| Vorbis |
C |
BSD
|
| VDPAU libvdpau |
C |
MIT
|
| XCB |
C |
MIT
|
| Xft |
C |
MIT/X
|
| Xlib |
C |
MIT
|
| XMLStarlet |
C |
MIT
|
| zlib |
C |
Zlib
|
| Zopfli |
C |
Apache 2.0
|
| Allegro |
C, C++ |
zlib
|
| ARToolKit |
C, C++ |
GPL
|
| DevIL |
C, C++ |
LGPL-2.1
|
| FFTW |
C, OCaml |
GPL-2.0-or-later
|
| FreeImageRe |
C, C++ |
GPLv2, GPLv3, FIPL
|
| GraphicsMagick |
C, C++ |
ImageMagick License
|
| ImageMagick library |
C, C++, Perl, Python, Ruby, Java, PHP |
ImageMagick License
|
| International Components for Unicode |
C, C++, Java |
ICU-4.0
|
| libcamera |
C, C++ |
GPL-2.0
|
| Math Kernel Library |
C, C++, DPC++, Fortran |
Apache 2.0
|
| libSass |
C, C++ |
MIT
|
| libSBML |
C, C++ |
LGPL-2.1
|
| LibX |
C, C++, Python |
MIT
|
| MoltenVK |
C, C++ |
MIT
|
| Netlib |
C, C++, Fortran, MATLAB |
Public Domain
|
| SQLite |
C, C++, Swift, Python, Java |
Public domain
|
| OpenSSL |
C, C++ |
Apache 2.0
|
| PLplot |
C, C++, Fortran, Java, OCaml, Python, Tcl |
LGPL
|
| PowerToys |
C, C++ |
MIT
|
| VDPAU |
C, C++ |
MIT
|
| Windows Template Library |
C, C++ |
CPL, MPL
|
| Armadillo |
C++ |
MPL 2.0
|
| Asio |
C++ |
Boost Software License
|
| Bitpit |
C++ |
LGPL-3.0
|
| Boost |
C++ |
Boost Software License
|
| Botan |
C++ |
MPL-2.0
|
| C++ Standard Library |
C++ |
GPL-3.0-or-later
|
| Caffe |
C++ |
BSD
|
| CAPD |
C++ |
GPL-3.0
|
| CGAL |
C++ |
GPL-3.0
|
| Cinder |
C++ |
MIT
|
| ClanLib library |
C++ |
zlib
|
| Class Library for Numbers |
C++ |
GPL
|
| CppUnit |
C++ |
GPL-3.0
|
| Crypto++ |
C++ |
Boost Software License
|
| deal.II |
C++ |
GPL-3.0
|
| Dlib |
C++ |
Boost Software License
|
| Effi libraries |
C++ |
GPL-3.0
|
| Eigen |
C++ |
MPL2
|
| fastText |
C++ |
MIT
|
| FLTK |
C++ |
LGPL-2.0-or-later
|
| Geospatial Data Abstraction Library |
C++ |
MIT
|
| General Polygon Clipper |
C++ |
zlib
|
| GLFW |
C++ |
Zlib License
|
| Google Test |
C++ |
BSD-3
|
| HarfBuzz |
C++ |
MIT
|
| Insight Segmentation and Registration Toolkit |
C++ |
Apache 2.0
|
| Jackets library |
C++, MATLAB |
Apache 2.0
|
| JSBSim |
C++ |
GPL-3.0
|
| JUCE |
C++ |
GPL-3.0
|
| KDE Frameworks |
C++ |
LGPL-2.1+
|
| LEMON |
C++ |
LGPL-3.0
|
| LevelDB |
C++ |
BSD
|
| Libdash |
C++ |
MIT
|
| libLAS |
C++ |
LGPL-2.1
|
| libsigc++ |
C++ |
LGPL
|
| LIVE555 |
C++ |
GNU GPL
|
| Metakit |
C++ |
MIT
|
| Microsoft SEAL |
C++ |
MIT
|
| Loki library |
C++ |
Boost Software License
|
| mlpack |
C++ |
Apache 2.0
|
| Mobile Robot Programming Toolkit |
C++ |
BSD-3-Clause
|
| Open Asset Import Library |
C++ |
LGPL
|
| Open Cascade libraries |
C++ |
LGPL 2.1 only
|
| OpenFOAM |
C++ |
GPLv3
|
| OpenImageIO |
C++ |
Apache 2.0
|
| OpenNN |
C++ |
GPL
|
| OpenVDB |
C++ |
MPL-2.0
|
| openFrameworks |
C++ |
MIT
|
| OpenRTM-aist |
C++ |
LGPL-2.1
|
| Orfeo toolbox |
C++ |
CeCILL-2.1
|
| OR-Tools |
C++ |
Apache 2.0
|
| PhysX SDK |
C++ |
BSD-3
|
| POCO C++ Libraries |
C++ |
MIT
|
| Poppler |
C++ |
GPL-2.0-or-later
|
| Protocol Buffers |
C++ |
BSD-3-Clause
|
| Qt |
C++ |
GPL 2.0, 3.0, LGPL 3.0
|
| QuantLib |
C++ |
GPL-2.0
|
| RocksDB |
C++ |
Apache 2.0
|
| ROOT |
C++ |
GNU GPLv3
|
| Scintilla |
C++ |
MIT
|
| Simple and Fast Multimedia Library |
C++ |
Zlib License
|
| Skia Graphics library |
C++ |
BSD
|
| Snappy |
C++ |
BSD
|
| Standard Template Library (STL) |
C++ |
None (Standard C++)
|
| Stapl |
C++ |
BSD
|
| SymbolicC++ |
C++ |
GNU GPL
|
| TBOX |
C++ |
MIT
|
| TerraLib |
C++ |
GPL-3.0
|
| Tesseract OCR |
C++ |
Apache 2.0
|
| Threading Building Blocks |
C++ |
Apache 2.0
|
| ThreadWeaver |
C++ |
GPL-2.0
|
| TinyXML |
C++ |
Zlib
|
| VTD-XML |
C++ |
Apache 2.0
|
| wxWidgets |
C++ |
wxWindows Library
|
| x265 |
C++ |
GPLv2
|
| Apache MXNet |
C++, Python, Julia, R |
Apache 2.0
|
| ALGLIB |
C++, C#, Python, Java, Lua |
LGPL
|
| CMU Sphinx |
C++, Java |
Apache 2.0
|
| Data Analytics Library |
C++, Java, Python |
Apache 2.0
|
| fastText |
C++, Python |
MIT
|
| OpenCV |
C++, Python, Java |
Apache 2.0
|
| Shogun (toolbox) |
C++, Python, Java |
GPL
|
| Microsoft Cognitive Toolkit |
C++, Python |
MIT
|
| Robot Operating System library |
C++, Python, Lisp |
Apache 2.0
|
| XGBoost |
C++, Python, R |
Apache 2.0
|
| Apache SINGA |
Python, C++ |
Apache 2.0
|
| AppJar |
Python |
Apache 2.0
|
| Astropy |
Python |
BSD-3
|
| Beautiful Soup |
Python |
MIT for version 4 and later
|
| Biopython |
Python |
BSD
|
| Chainer |
Python |
Apache 2.0
|
| CatBoost |
Python |
Apache 2.0
|
| CheetahTemplate |
Python |
MIT
|
| Construct |
Python |
MIT
|
| Cubes |
Python |
GPL-3.0
|
| CuPy |
Python |
MIT
|
| Dask |
Python |
BSD-3
|
| DEAP |
Python |
MIT
|
| DeepSpeed |
Python |
Apache 2.0
|
| Genshi |
Python |
BSD-3
|
| Gensim |
Python |
LGPL-2.1
|
| Graph-tool |
Python |
GPL-3
|
| Horovod |
Python |
Apache 2.0
|
| JAX |
Python |
Apache 2.0
|
| Jinja |
Python |
BSD-3
|
| Keras |
Python |
MIT
|
| Mako |
Python |
MIT
|
| Manim |
Python |
MIT
|
| Matplotlib |
Python |
PSF 2.0
|
| mlpy |
Python |
GPL-3.0
|
| MNE-Python |
Python |
BSD-3
|
| Natural Language Toolkit |
Python |
Apache 2.0
|
| NeuroKit |
Python |
MIT
|
| NetworkX |
Python |
BSD-3
|
| NumPy |
Python |
BSD-3
|
| OceanParcels |
Python |
MIT
|
| OpenAI Gym |
Python |
MIT
|
| Orange |
Python |
GPL-3.0-or-later
|
| Pandas |
Python |
BSD-3
|
| Plotly.py |
Python |
MIT
|
| ProbLog library |
Python |
MIT
|
| PsychoPy |
Python |
GPL-3.0
|
| pvlib python |
Python |
MIT
|
| Pygame |
Python |
LGPL
|
| Pyglet |
Python |
MIT
|
| PyGObject |
Python |
LGPL-2.1 or later
|
| PyMC |
Python |
Apache 2.0
|
| Python Imaging Library |
Python |
Python Imaging Library License
|
| PyroBot library |
Python |
MIT
|
| PyTorch |
Python |
BSD-3
|
| PyTorch Lightning |
Python |
Apache 2.0
|
| Qiskit |
Python |
Apache 2.0
|
| Query Abstraction Layer |
Python |
MIT
|
| RDFLib |
Python |
MIT
|
| RDKit |
Python |
BSD-3
|
| Requests |
Python |
Apache 2.0
|
| RPyC |
Python |
GPL-2.0
|
| Sage Manifolds |
Python |
GPL-3.0
|
| scikit-image |
Python |
BSD-3
|
| scikit-learn |
Python |
BSD-3
|
| scikit-multiflow |
Python |
BSD-3
|
| SciPy |
Python |
BSD-3
|
| SimpleITK |
Python |
Apache 2.0
|
| spaCy |
Python |
MIT
|
| SQLAlchemy |
Python |
MIT
|
| SQLObject |
Python |
MIT
|
| Storm |
Python |
MIT
|
| SymPy |
Python |
BSD-3
|
| TensorFlow |
Python |
Apache 2.0
|
| Theano |
Python |
MIT
|
| TomoPy |
Python |
BSD-3
|
| Transformers Library |
Python |
Apache 2.0
|
| VPython |
Python |
Licenses vary
|
| wxPython |
Python |
wxWindows License
|
| XDMF |
Python |
BSD-3
|
| Angular Material |
TypeScript |
MIT
|
| AngularJS Material |
TypeScript |
MIT
|
| D3.js |
JavaScript |
ISC
|
| Babylon.js |
JavaScript |
Apache 2.0
|
| BioJS |
JavaScript |
MIT
|
| Blockly |
JavaScript |
Apache 2.0
|
| Bootstrap |
JavaScript |
MIT
|
| Chart.js |
JavaScript |
MIT
|
| D3.js |
JavaScript |
BSD-3
|
| Dojo Toolkit |
JavaScript |
BSD-3
|
| Express.js |
JavaScript |
MIT
|
| Google Closure Library |
JavaScript |
Apache 2.0
|
| jQuery |
JavaScript |
MIT
|
| JsRender/JsViews |
JavaScript |
MIT
|
| Lodash |
JavaScript |
MIT
|
| NestJS |
JavaScript |
MIT
|
| MathJax |
JavaScript |
Apache 2.0
|
| Polymer |
JavaScript, HTML |
MIT
|
| Processing libraries |
JavaScript |
MIT
|
| RGraph |
JavaScript |
MIT
|
| Raphaël |
JavaScript |
MIT
|
| React |
JavaScript |
MIT
|
| Three.js |
JavaScript |
MIT
|
| Velocity |
JavaScript |
MIT
|
| Vue.js |
JavaScript |
MIT
|
| Webix |
JavaScript |
GNU-GPL, MIT, BSD, via FLOSS
|
| WinJS |
JavaScript, TypeScript |
MIT
|
| RiTa |
JavaScript, Java |
GPL-3.0
|
| Apache Ant repository |
Java |
Apache 2.0
|
| Apache Calcite |
Java |
Apache 2.0
|
| Apache Commons |
Java |
Apache 2.0
|
| Apache CXF |
Java |
Apache 2.0
|
| Apache Empire-db |
Java |
Apache 2.0
|
| Apache Lucene |
Java |
Apache 2.0
|
| Apache Maven |
Java |
Apache 2.0
|
| Apache OpenNLP |
Java |
Apache 2.0
|
| Apache PDFBox |
Java |
Apache 2.0
|
| Apache Phoenix |
Java |
Apache 2.0
|
| Apache POI |
Java |
Apache 2.0
|
| Apache Velocity |
Java |
Apache 2.0
|
| Apache Xalan |
Java |
Apache 2.0
|
| Apache Xerces |
Java |
Apache 2.0
|
| Apache XMLBeans |
Java |
Apache 2.0
|
| BioJava |
Java |
LGPL-2.1
|
| Bouncy Castle (cryptography) |
Java |
MIT
|
| Cassowary |
Java |
MIT
|
| Chemistry Development Kit |
Java |
LGPL 2.0
|
| Colt |
Java |
EPL-1.0
|
| Cytoscape |
Java |
LGPL-2.1
|
| Deeplearning4j |
Java |
Apache 2.0
|
| Dom4j |
Java |
GNU Lesser General Public License
|
| Exp4j |
Java |
Apache 2.0
|
| Flying Saucer |
Java |
LGPL-2.1
|
| GNU Classpath |
Java |
GPL-2.0
|
| Google Guava library |
Java |
Apache 2.0
|
| Google Guice |
Java |
Apache 2.0
|
| Google Web Toolkit |
Java |
Apache 2.0
|
| Gson |
Java |
Apache 2.0
|
| Infinispan |
Java |
LGPL-2.1-or-later
|
| iText |
Java |
AGPL-3.0
|
| Jackson |
Java |
Apache 2.0
|
| Javolution |
Java |
LGPL-2.1
|
| Java Class Library |
Java |
GPL-2.0
|
| JavaFX |
Java |
GPL-2.0-or-later
|
| Java-gnome |
Java |
LGPL-2.1
|
| Java OpenGL |
Java, C |
BSD
|
| Jblas: Linear Algebra for Java |
Java |
LGPL-3
|
| JFace |
Java |
EPL-2.0
|
| JFugue |
Java |
Apache-2
|
| jMusic |
Java |
GPL-2
|
| jsoup |
Java |
MIT
|
| JUnit |
Java |
EPL 2.0
|
| LibGDX |
Java |
Apache 2.0
|
| Log4j |
Java |
Apache 2.0
|
| LWJGL |
Java |
BSD
|
| Mallet |
Java |
Apache 2.0
|
| MOEA Framework |
Java |
GPL-3.0
|
| Netty |
Java |
Apache 2.0
|
| Neuroph |
Java |
Apache 2.0
|
| ObjectWeb ASM |
Java |
LGPL-3.0
|
| OjAlgo |
Java |
Apache 2.0
|
| OpenPDF |
Java |
GPL-2.0
|
| Open Source Physics |
Java |
GPL-2.0
|
| OpenWire |
Java |
Apache 2.0
|
| Parallel Colt |
Java |
GPL-3.0
|
| Parboiled |
Java |
Apache 2.0
|
| Processing |
Java |
GPL-2.0
|
| Quartz |
Java |
Apache 2.0
|
| SLF4J |
Java |
MIT
|
| Spring Batch |
Java |
Apache 2.0
|
| Spring Framework |
Java |
Apache 2.0
|
| StAX |
Java |
Apache 2.0
|
| Standard Widget Toolkit |
Java |
EPL-2.0
|
| Swing |
Java |
GPL-2.0-or-later
|
| Thymeleaf |
Java |
Apache 2.0
|
| Verax IPMI |
Java |
GPL-3.0
|
| XStream |
Java |
Apache 2.0
|
| BioRuby |
Ruby |
GPL-2.0
|
| Eulim[4] |
Ruby |
MIT
|
| eRuby |
Ruby |
MIT
|
| Haml |
Ruby |
MIT
|
| Nokogiri |
Ruby |
MIT
|
| RSpec |
Ruby |
MIT
|
| RubyGems |
Ruby |
Ruby License
|
| Ruby on Rails |
Ruby |
MIT
|
| Sinatra |
Ruby |
MIT
|
| ADOdb |
PHP |
LGPL
|
| AmfPHP |
PHP |
GPL
|
| Composer |
PHP |
MIT
|
| Doctrine |
PHP |
MIT
|
| Guzzle |
PHP |
MIT
|
| Laravel |
PHP |
MIT
|
| Laminas |
PHP |
MIT
|
| li3 |
PHP |
MIT
|
| PHPMailer |
PHP |
LGPL
|
| RedBeanPHP |
PHP |
BSD
|
| Simple Cloud API |
PHP |
Apache 2.0
|
| SimpleXML |
PHP |
PHP
|
| Symfony |
PHP |
MIT
|
| Twig |
PHP |
BSD
|
| XHP |
PHP, Hack |
MIT
|
| Rocket |
Rust |
MIT
|
| Rustls |
Rust |
Apache 2.0
|
| Tokio |
Rust |
MIT
|
| Standard ML Basis Library |
Standard ML |
MIT
|
| FCL-Web |
Pascal |
GPL-2.0
|
| fpGUI |
Pascal |
GPL-2.0
|
| Turbo Vision |
Pascal, C++ |
MPL-1.1
|
| Widgetset |
Pascal |
GPL-2.0
|
| Free Component Library |
Object Pascal |
GPL
|
| FireMonkey |
Delphi, C++ |
not available
|
| Free Pascal Runtime Library |
Object Pascal, Delphi |
GPL
|
| Lazarus Component Library |
Object Pascal |
GNU GPL, GPLv2, LGPL, MPL.[5]
|
| GNU lightning |
Assembly language, C |
GPL-3.0
|
| Libffi |
Assembly language, C |
MIT
|
| Basic Linear Algebra Subprograms (BLAS) |
Fortran, C, R |
BSD, GPL, LGPL
|
| LAPACK |
Fortran, C |
BSD
|
| Dart core libraries |
Dart |
BSD-3-Clause
|
| GORM |
Go |
MIT
|
| Haskell Platform |
Haskell |
BSD
|
| HaXml |
Haskell |
BSD-3-Clause
|
| Parsec (parser) |
Haskell |
MIT
|
| QuickCheck |
Haskell |
BSD-3-Clause
|
| wxHaskell |
Haskell |
BSD-3-Clause
|
| Haxe library |
Haxe |
MIT
|
| INTLAB |
MATLAB, GNU Octave |
GPL-3.0
|
| Torch |
Lua |
MIT
|
| Flux |
Julia |
MIT
|
| Owl Scientific Computing |
OCaml, C |
Apache 2.0
|
| BioPerl |
Perl |
GPL-1.0
|
| CPAN |
Perl |
Artistic-1.0
|
| CGI.pm |
Perl |
Artistic License 2.0 or GPL
|
| DBIx::Class |
Perl |
MIT
|
| Gtk2-Perl |
Perl |
LGPL
|
| Mojolicious |
Perl |
MIT
|
| Moose |
Perl |
MIT
|
| Perl Data Language |
Perl |
GPL-3.0
|
| Perl DBI |
Perl |
Artistic License 1.0 or GPL
|
| Perl Object Environment |
Perl |
GPL-2.0
|
| Template Toolkit |
Perl |
GPL-1.0 or Artistic 2.0
|
| DESeq2 |
R |
BSD-3
|
| igraph |
R, Python, C, Ruby, MATLAB |
GPL-2.0
|
| LIBSVM |
R |
LGPL-3.0
|
| R package |
R |
GPL-2.0
|
| rnn |
R |
MIT
|
| Common Lisp Interface Manager |
Common Lisp |
LGPL
|
| Common Lisp library |
Common Lisp |
LGPL-2.1, others
|
| Chicken eggs |
Chicken Scheme |
BSD
|
| Perfect |
Swift |
Apache 2.0
|
| Vapor |
Swift |
MIT
|
