There are 32 repositories under vst-plugin topic.
Noise suppression plugin based on Xiph's RNNoise
A list of open source VST/audio plugin projects. Please contribute more links or open source your own plugins.
Virtual Studio Technology (VST) for .NET. Plugins and Host applications.
Collection of LADSPA/LV2/VST/JACK audio plugins for high-quality processing
Audio plugin model of a modern classic guitar overdrive Pedal
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.
ChucK-Racks makes it possible to write and execute ChucK programs as VST/AudioUnit plugins.
Pipe organ synthesizer (VST plugin)
Node based multi effects audio processor
Digital model of electronic string ensemble instrument
Modular Sound Synthesizer
A JUCE-based Open Source DAW
Reverb effect using hybrid impulse convolution
Accompanying material for the paper 'A Real-Time Audio Effect Plug-In Inspired by the Processes of Traditional Indonesian Gamelan Music'
An extension to the 'rust-vst' crate to create VST plugin GUIs
VST plugin that reduces sampling rate, bit depth and playback speed on-the-fly
VST plugin that acts as a multi channel formant filter