Synths

Dexed

Pascal Gauthier

A multi-format FM plugin synth closely modeled on the Yamaha DX7

Cardinal

DISTRHO

A virtual modular synthesizer plugin based on VCV Rack, also available as a standalone app

OB-Xf

Surge Synthesizer Team

OB-Xf is a continuation and modernatization of the last open source release of OB-Xd by 2DaT and later discoDSP. It is inspired by the venerable Oberheim OB-X.