Cocoa Delay is a free, open-source delay plugin in VST format. It focuses on clean design, easy operation, and a warm, lively sound.
- Delay time drift, for giving the wet signal a slight wow/flutter effect.
- Adjustable wet level ducking based on the input signal.
- Static, ping-pong, and circular pan modes.
- Drive section based on open-source Airwindows saturation code.
Cocoa Delay is free and open-source! If you're a programmer type, you can check it out on GitHub.
You can also read a manual here.