OctaSine
Free FM synth by Joakim Frostegård · since 2019 · version 0.9.1
What OctaSine is
A four-operator FM synth written in Rust, with a trick nobody else has: modulation panned across the stereo field.
- Four operators: sine, square, triangle, saw and noise
- Flexible routing of operator modulation targets
- Modulation panning positions FM within the stereo field
How to install OctaSine
OctaSine runs on Windows, macOS and Linux. It ships as VST2 and CLAP. If your DAW supports CLAP (Bitwig, Reaper, FL Studio), prefer that build. There is no VST3 build, so make sure your DAW still loads VST2. Download it from octasine.com, run the installer or copy the plugin into your plugin folder, then rescan plugins in your DAW.
Questions
Is OctaSine free?
Yes. OctaSine is free from Joakim Frostegård, and it is open source under the AGPL-3.0 license. There is no trial period and no feature lock.
What plugin formats does OctaSine support?
OctaSine is available as VST2 and CLAP.
Which operating systems run OctaSine?
OctaSine runs on Windows, macOS and Linux.
Free alternatives to OctaSine
The DX7 in your DAW. Loads original sysex patches, so forty years of FM sound design is yours for nothing.
Six sine operators that can all modulate each other at audio rate. Strange, deep and MIT-licensed.
Four-operator FM with eight algorithms and drag-and-drop TX-style envelopes. Friendlier than a DX ever was.