Who Is Using MSYS2?

• RubyInstaller2 uses MSYS2 to build Ruby for Windows in CI and as build environment for gems with C extensions.
• Gaphor uses MSYS2 for its Windows releases and for CI
• Git for Windows is based on MSYS2
• Quod Libet uses MSYS2 for its Windows build and for CI
• HDL/MINGW-packages uses MSYS2 for building and testing open source Electronic Design Automation (EDA) tools.
• ghdl/ghdl uses MSYS2 for building, packaging and testing GHDL.
  • ghdl/setup-ghdl-ci uses setup-msys2 for users to run GHDL on GitHub Actions' Windows environments.
  • ghdl/extended-tests uses setup-msys2 and setup-ghdl-ci for testing third-party projects with GHDL on GitHub Actions' Windows environments.
• gtkwave/gtkwave uses MSYS2 for building and packaging GTKWave.
• steveicarus/iverilog uses MSYS2 for building, packaging and testing Icarus Verilog.
• trabucayre/openFPGALoader uses MSYS2 for building, packaging and testing openFPGALoader.
• azonenberg/scopehal-apps uses MSYS2 for building libscopehal, glscopeclient and other client applications for libscopehal.
• Serial-Studio/Serial-Studio uses MSYS2 for building and testing Serial Studio.
• VUnit/vunit uses MSYS2 for testing VUnit.
• ImPPG uses MSYS2 for its Windows releases.
• Inkscape uses MSYS2 for its Windows releases and for CI (Documentation)
• KeePassXC uses MSYS2 for building and running KeePassXC password manager.
• Media-autobuild_suite uses MSYS2 for automatically building FFmpeg and other media related tools
• Network UPS Tools uses MSYS2/MinGW for "semi-native" builds of NUT for Windows (cross-builds on Linux+MinGW are also possible).
• Nuwen's MinGW Build uses MSYS2 to build the files.
• OpenModelica uses MSYS2 for building the OpenModelica tools and compiling the generated simulation code on Windows.
• Paperwork uses MSYS2 for its Windows releases and for CI (Documentation)
• The R Project build system rtools40 is based on MSYS2 icw/ a custom repository of mingw packages (all statically linked).
• Spatial Model Editor uses MSYS2 for its Windows releases and for CI
• UrusStudio Installer uses MSYS2 for building and running Urus Studio IDE and URUS System.
• Webots uses MSYS2 to build Webots on Windows and for CI.
• Xournal++ uses MSYS2 for its Windows releases and for CI (Documentation).
• Neovim uses MSYS2 for its Windows building and running (Documentation).
• darktable uses MSYS2 for its Windows releases and for CI (Documentation)
• Mesh2HRTF uses MSYS2 for its Windows NumCalc binaries (Documentation).
• PVSnesLib uses MSYS2 to build ROMs on Windows
• Crown Engine uses MSYS2 for its Windows releases and for CI.

Feel free to add your project to this list!