What makes Flack different.
Two things we got right: it's lightweight everywhere, and AI isn't an afterthought.
Lightweight by Design
Instant messaging
Your message appears the moment you hit send. No spinner. No lag. We use optimistic UI — your message renders locally while the server catches up in the background. If you go offline, messages queue in your browser and sync when you reconnect.
Multi-platform, always lean
Desktop: a native Tauri app under 10MB — not a browser pretending to be a desktop app. Web: a fast SPA that loads in milliseconds. PWA: install it from your browser, use it offline. Same experience, every platform.
Passwordless auth
No passwords to forget, no password managers to fuss with. Enter your email, get a magic link or a 6-digit code. Click and you're in. Your team can start chatting in under a minute.
Real-time sync
WebSocket push, not polling. Everyone sees the same thing at the same time. Presence, typing indicators, reactions — all live, all the time.
AI That Actually Works With You
@flack agent
@flack lives in your channels like a team member. Mention it and it responds with context-aware answers. It's not a chatbot shoved into a sidebar — it's part of the conversation.
Knowledge base
Your team's institutional knowledge, surfaced when it's relevant. @flack learns from your conversations and builds a living knowledge base — not a wiki nobody reads.
Task management
Create and track todos right from the conversation. Assign them, set due dates, get reminders. @flack manages the lifecycle so things don't fall through the cracks.
Intent understanding
Not keyword matching. Flack classifies what you're actually asking for and executes multi-step actions. Ask it to "set up a standup reminder for the team" and it does exactly that.
Convinced?
Join the waitlist. We'll let you in soon.