Slack is bloated.
We fixed that.
Flack is lightweight team communication with instant messaging, offline support, and an AI teammate built in — not bolted on. Desktop, web, or PWA — your call.
Chat shouldn't eat your machine.
Your team chat app shouldn't need 500MB of disk space, a gig of RAM, and 30 seconds to start. It shouldn't ship a whole browser just to show text on a screen. We built Flack because we were tired of waiting for our tools.
The numbers
Lightweight everywhere.
Desktop
Native Tauri app. Under 10MB. Not Electron wearing a trench coat.
Web
Loads fast. Stays fast. No framework bloat dragging you down.
PWA
Install from your browser. Works offline. Syncs when you're back.
0ms latency
Messages render before the server confirms. No spinners. Ever.
AI that actually works with you.
Lives in your channels
@flack isn't a sidebar widget or a separate app. It's a teammate in the conversation.
Understands context
Reads your team's knowledge base, not just the last message. Answers with what your team actually knows.
Takes action
Creates todos, answers questions, manages knowledge. Not autocomplete — an agent.
Built with