Awesome

mverb

Studio quality, open-source reverb. Its release was intended to provide a practical demonstration of Dattorro’s figure-of-eight reverb structure and provide the open source community with a high quality reverb.

All code is self-contained within the mverb.h file and an example showing inclusion in a VST plugin is included.

Binaries for Windows VST, Mac VST and Linux VST can be found at http://rekkerd.org/martin-eastwood-audio-free-plugins/