Your plugins.
Your rig. Your rules.

An open-source, forever-free virtual effects board for macOS.

Download for macOS Read the docs
Apple Silicon macOS 11+ VST3 · AU AGPLv3
Stellarr screenshot

Yours to wire.

A rig that doesn't make the rules.

Signal grid

Drop plugins into a grid, draw connections, route in parallel. No hidden matrix.

Scenes and states

Snapshot any routing, recall it instantly. Bank through scenes with a footswitch or a MIDI PC.

MIDI mapping

Bind any parameter to any controller. CC, PC, notes — mapped with a single right-click, or via learn-mode capture.

Built-in tuner

A cents-level tuner, baked right in. Nothing extra to load, nothing extra to route — tap the icon and you're in.

Questions answered.

Short versions. Docs has the full picture.

Is Stellarr free?
Yes. Free as in beer and as in speech. Released under AGPLv3, source on GitHub.
What Macs are supported?
Apple Silicon Macs on macOS 11 or newer. Intel and earlier macOS not supported.
Which plugin formats?
VST3 and AU. Any host-compatible plugin you already own works.
Is it stable?
Pre-1.0. Use it, expect rough edges, report what breaks.
How do I report bugs or contribute?
Open an issue or PR on GitHub. Guide in CONTRIBUTING.md.