Airwindows VerbThic, VerbTiny let you go even more rabid for reverb, for free

Chris Johnson, aka Airwindows, continues to share his love for DSP with free tools, open source code, and elaborate discussions of the joy of crafting reverbs. So just in case you don’t feel blessed enough with free effects after SuperMassive’s new Sirius reverb/delay, here’s the tiny and the thick in all-new Airwindows editions. And they’ll even run in VCV Rack or on a Raspberry Pi.

Super Massive 5 adds Sirius echo/reverb to the best free plugin in the galaxy

Valhalla isn’t done with reverb/echo blockbusters to reverberate through the end of 2025. The free plug-in — so good we really would pay for it — is back, and now it’s gotten Sirius. Welcome Super Massive 5.0.0.

Peter Kirn - November 28, 2025

SuperSonic: SuperCollider synth is fun, playful, colorful, free, in any Web page

It’s the full SuperCollider synth, without the installation. You can add it to any site (self-hosted). It performs seamlessly via WebAssembly. But most importantly, it’s fun, colorful, and comes with examples and an OSC API so it can interface with live coding tools like Tidal (or your favorite). And you can mess around with it right now, for free.

Peter Kirn - November 15, 2025

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