Desktop App — v1.1.5

FCOS Symbiote Desktop

Your entire AI team in a native window. Free to download. No browser needed.

Download for Windows .msi installer · x64 · Windows 10+

Download for macOS .dmg · Apple Silicon · macOS 12+

Download for Linux .AppImage · x86_64 · Ubuntu 20.04+

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Specialist workspace
All your symbiotes in one native window — Think Tank, Build, Brainz, and more.

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All FCOS products
Synapse, Sprint, Build, Brainz, Store — the full platform without browser tabs.

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Native performance
WebKit rendering, Rust backend. ~5 MB install. Fast cold starts.

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Auto-updates
Stay on the latest version automatically. No manual reinstalls.

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Free forever
No trial. No credit card. The desktop app is free.

FCOS Store

93%

Publish your apps. Earn 93% of every sale.

Build something on FCOS. List it in the Store. Keep 93% of every sale you make.

We take 7% — split between advertising your app, promoting you, and rewarding the community that helped your app succeed.