- [Tilix](https://github.com/gnunn1/tilix), a tiling terminal emulator for Linux using GTK+ 3
- [Tizonia](https://github.com/tizonia/tizonia-openmax-il), a command-line cloud music player for Linux with support for Spotify, Google Play Music, YouTube, SoundCloud, TuneIn, Plex servers and Chromecast devices
- [Trilobite XUnit Test](https://github.com/trilobite-stdlib/trilo-xtest-c), a framework for testing C code
- [Trilobite XCore](https://github.com/trilobite-stdlib/trilo-xcore-c), a core essential library for C code
- [UFJF-MLTK](https://github.com/mateus558/UFJF-Machine-Learning-Toolkit), A C++ cross-platform framework for machine learning algorithms development and testing
- [Vala Language Server](https://github.com/benwaffle/vala-language-server), code intelligence engine for the Vala and Genie programming languages
- [Valum](https://github.com/valum-framework/valum), a micro web framework written in Vala