Browser Instruments · Native Plugins · Generators

J.BARTEE // MUSIC MACHINES

A small collection of playable synthesizers, rhythm machines, and generative instruments. Every one of them opens and plays straight from a browser tab — no accounts, nothing to sign up for — and four have been rebuilt in native C++ as free VST3 / AU plugins you can install in your DAW. Built for musicians first.

7 MACHINES // 4 VST3 / AU // OPEN SOURCE

The Collection

7 INSTRUMENTS — CLICK LAUNCH TO PLAY

Native Plugins

4 PLUGINS — FREE DOWNLOAD

Four of the machines have been ported from the browser down to native C++ so they load in a DAW. Same synthesis, no web audio underneath — each download carries a VST3, an Audio Unit and a standalone app in one universal build that runs on both Apple Silicon and Intel Macs.

Installing — read this first, or your DAW won’t see the plugin

These plugins aren’t code-signed or notarized, so macOS quarantines them on download. A quarantined plugin usually doesn’t show up as an error — your DAW just silently doesn’t list it. Unzip, then put the pieces where the host looks for them:

NAME.vst3 → ~/Library/Audio/Plug-Ins/VST3/
NAME.component → ~/Library/Audio/Plug-Ins/Components/
NAME.app → /Applications, if you want the standalone

Then clear the quarantine flag once, in Terminal:

xattr -dr com.apple.quarantine ~/Library/Audio/Plug-Ins/VST3/
xattr -dr com.apple.quarantine ~/Library/Audio/Plug-Ins/Components/

Restart your DAW afterwards. Logic and other AU hosts may need a full quit and reopen before they re-validate. Every download ships the same instructions in an INSTALL.txt. Requires macOS 10.15 or later.