1:1 and group chats
Private conversations with one person or many. Read receipts, typing indicators, threads.
Private messaging
that's actually private.
Koder Talk is an end-to-end encrypted messenger for teams and people. Chats, groups, channels, voice and video calls, file sharing — all protected by the Signal Protocol. Self-hosted, open-source, no tracking, no ads.
Everything a modern messenger needs
Public channels
Open rooms anyone in your organization can join. Great for announcements and communities.
Voice and video calls
One-tap calls, end-to-end encrypted media via WebRTC, group calls through a self-hosted SFU.
Files, photos, voice notes
Share anything. All blobs are encrypted on your device before they ever leave it.
Multi-device
Use Koder Talk on your phone, laptop, tablet and desktop. Messages sync, identity stays yours.
Bots and webhooks
Wire your services into conversations. Build assistants, alerts and automations.
Built on cryptography you can trust
We didn't roll our own crypto. Koder Talk uses the same primitives that protect billions of messages every day on Signal, WhatsApp and Google Messages. The server cannot read your conversations — period.
- Signal Protocol for end-to-end encryption (X3DH + Double Ratchet, via libsignal).
- Noise Protocol (Noise_XX) for the client/server channel — mutually authenticated, forward-secret.
- WebRTC Insertable Streams for end-to-end encrypted voice and video, even in group calls.
- Self-hosted — run it on your own server, your own domain, your own rules.
- Open source — every line auditable on Koder Flow.
- No tracking, no ads, no telemetry sent off your server.
Get Koder Talk
Apps for every platform. The web app works in any modern browser.