Everything you need
to connect
Harmony combines Discord-like features with ActivityPub federation, giving you the best of both worlds: familiar functionality with decentralized freedom.
Messaging & Servers
The foundation of your community experience
Real-Time Messaging
Lightning-fast message delivery with typing indicators, read receipts, and instant sync across all devices.
Servers & Channels
Organize communities into servers with text and voice channels. Perfect for gaming, work, or hanging out.
Direct Messages
Private one-on-one conversations or group DMs with up to 10 people. Keep it personal.
Voice & Video
Crystal clear audio with revolutionary spatial technology
Voice Channels
Drop into voice channels to chat with friends. No calling required-just join and talk.
Spatial Audio
Revolutionary 3D audio positioning lets you hear who's talking from where, making group calls natural and easy to follow.
Video Calls
High-quality video in DMs and channels. Share your screen, show your face, or just hang out.
Why Spatial Audio?
Traditional voice chat mixes all voices into a single stream, making it hard to tell who's talking when multiple people speak. Harmony's spatial audio positions each person in 3D space around you, just like a real conversation. Your brain naturally separates the voices, making group calls feel natural and easy to follow.
- Easily follow conversations with 5+ people
- No more awkward interruptions
- Natural, immersive experience
- Perfect for gaming and virtual hangouts
Connect Across the Fediverse
Break free from walled gardens
ActivityPub Federation
Connect with users on Mastodon, Pleroma, Misskey, and thousands of other federated platforms.
Discord Bridge
Bridge your existing Discord server to Harmony. Messages sync both ways for seamless migration.
Federated Servers
First in the fediverse! Users from multiple Harmony instances can join the same server.
Harmony ServerDiscord Bridge
Migrate your community at your own pace. The Discord Bridge plugin syncs messages between Discord and Harmony servers, so no one gets left behind during the transition.
- Two-way message synchronization
- Attachment and embed support
- User mapping and mentions
- Easy configuration via YAML
Build & Extend
Powerful APIs and customization options
Bot API
Discord-compatible bot API makes it easy to build and migrate bots. Use familiar patterns and libraries.
Plugin System
Extend Harmony with plugins. Add custom features, integrations, and automations.
Self-Hosting
Run your own instance with Docker. Complete control over your data and customizations.
Your Data, Your Rules
Privacy by design, security by default
End-to-End Encryption
Optional E2EE using Matrix-like encryption. Your messages stay private, even from server operators.
Privacy Controls
Granular privacy settings. Control who can message you, see your status, and more.
Open Source
Fully open source codebase. Audit the code, contribute improvements, or fork it entirely.
Ready to experience Harmony?
Download now and join the federated future of chat.