ChucK Racks makes it possible to write and execute ChucK programs as VST/AudioUnit plugins. The ChucK Racks architecture supports the following features:

- Process incoming audio in ChucK (i.e. Audio FX plugins)

- Process MIDI events from the host in ChucK programs (MIDI FX plugins)

- Write synthesis plugins in ChucK that run as regular synthesizer audio plugins in a host/DAW

- Synchronize clock and beat-time between a host/session and ChucK

- Generate new MIDI/OSC events from ChucK (e.g. writing MIDI/OSC sequencer plugins)

- Automate variables in ChucK code using host automation lanes