Contributing to Pure data for the upcoming 0.56 release: https://github.com/pure-data/pure-data

AOO - a C/C++ library for low-latency peer-to-peer audio streaming and messaging:

https://git.iem.at/aoo/aoo

https://www.soundingfuture.com/en/article/aoo-low-latency-pe...

"game over" - a musical 2D game engine: https://vimeo.com/389378372