A modern platform for communities — real-time messaging, crystal-clear voice, and total control over your space.
Built for gaming groups, dev teams, creators, and private communities who want control without compromise.
Every conversation is encrypted on your device before it ever reaches our servers. Built on the same open standards trusted by security researchers and governments worldwide.
Onyx is built on the Matrix protocol's Megolm algorithm — the same open standard trusted by governments, journalists, and security researchers worldwide. Encryption and decryption happen locally on your device. We provide secure cloud backup of your session keys so you can restore access on any new device, effortlessly.
Messages are stored as encrypted ciphertext on our servers. Your session keys are securely backed up server-side so you can restore access on any new device without losing your history — no passphrases to memorize.
Your encryption keys sync securely to new devices behind the scenes. Sign in and your full message history is simply there — no setup, no codes.
Fresh encryption keys are generated for every conversation session. A compromise of one session's keys cannot expose messages from any other session — your conversations stay isolated from each other.
The Matrix protocol's Megolm encryption is openly published, independently audited, and deployed in millions of production environments worldwide.
Built from the ground up for modern communities.
Instant messages with threads, reactions, file sharing, and rich embeds.
Crystal-clear voice channels powered by LiveKit with screen sharing.
Plan community gatherings, game nights, or AMAs — members get reminded automatically when it's time.
29 granular permission flags, custom roles with colors, full hierarchy control.
Desktop notifications, mentions, per-channel unreads — never miss what matters.
Custom roles, invite links, temp bans, mutes, audit logs, and an analytics dashboard — every tool you need to run a healthy community.
A familiar interface, rebuilt for performance and privacy.
Built for communities that demand more.
More than just another chat app.
Your conversations stay private. Onyx is built on Matrix with end-to-end encryption.
No ads, no data selling. Onyx is funded directly by supporters who believe in better communication — your conversations are never the product.
Worker-based architecture handles thousands of concurrent users without breaking a sweat.
We're building in public — here's a look at where we're headed.
Modern, battle-tested technologies at every layer.
Native performance, system notifications, and auto-updates.
v1.2.0 · Windows 10+ (64-bit)
Join Project Onyx today — it's free.
Create AccountEarly Access — Project Onyx is actively evolving. You may encounter rough edges as we continue building.
We don't sell your data. Ever.