RIKIO ROCKS / Sunday, September 27, 2026 / Categories: New Products, EDM News Overtonium Is A Free, Open-Source Additive Synthesizer For Mac, Windows And Linux Overtonium is a free, open-source 32-partial additive synthesizer that gives each harmonic its own channel-style controls for tuning, envelopes, modulation, stereo placement and level.… Read More Overtonium Is A Free, Open-Source Additive Synthesizer For Mac, Windows And Linux Previous Article Ocean Swift Intros Wave Editor For Mac & Windows Next Article SynthSkool Intros Degauss Vintage Synth Sample Instrument Print 19 Tags: Synth