There are 3 repositories under audio-unit topic.
🎛 🔊 A Python library for audio.
Physical modelling signal processing for analog tape recording
An audio plugin with Pure Data embedded that allows to load and to control patches
Make VST2 / VST3 / AU / AAX / CLAP / LV2 / FLP plug-ins for Linux/macOS/Windows, using D.
Jamtaba is a software to play online music jam sessions.
native node addon that allows for instantiation of natively installed VST3 audio plugins
JUCE implementations of the classic MDA audio plug-ins
A collection of templates for creating Audio Unit V3 in Xcode
Room Reverb is a mono/stereo to stereo algorithmic reverb audio plugin with many presets that lets you add reverberation to your recordings in your DAW.
DSP Magnetic Tape Emulation
Customisable UIScrollView subclass for rendering/editing MIDI notes on a piano roll view.
Free EQ audio plugin (VST3, AU) with modulation
VST plugin that acts as a multi channel formant filter
VST plugin that reduces sampling rate, bit depth and playback speed on-the-fly
(WIP) MIDI Sequencer Audio Unit
A great start point for making AUv3 MIDI sequencer apps.
A list of free audio and MIDI plugins for music production
Experimental additive wavetable synth plugin that allows control of overtone amplitudes
Routes white keys from midi-input to chosen scale to midi output