Full Bucket Music tells us that Oxid is a software instrument for Microsoft Windows (VST2/VST3/CLAP) and Apple macOS (VST2/VST3/CLAP/AU) simulating the classic ARP Omni-2 Polyphonic Synthesizer from the 1970s. They say that it is written in native C++ code for high performance and low CPU consumption.
Main features:
Pricing and Availability:
Free. Donations welcomed.
More information:
Older Music Machines & the People Who Still Use Them