Cocoa Delay is a free, open-source delay plugin in VST format. It focuses on clean design, easy operation, and a warm, lively sound.

Notable features:

• 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

tesselode.itch.io/cocoa-delay
github.com/tesselode/cocoa-delay