GitHub - peterc/coopiano: A physically modelled piano synthesizer in C++17 with offline WAV rendering and live MIDI on macOS. github.com

Peter C. has released coopiano, an open-source C++17 piano synthesizer that models hammers, strings, a soundboard and sympathetic resonance rather than using samples. It renders notes and MIDI files to stereo WAV on supported platforms and offers live MIDI/audio on macOS; the MIT-licensed release does not include the developer’s prototype AU or VST plugins.