Crystal-Clear Voice Calls
Real-time voice powered by WebRTC and a mediasoup Selective Forwarding Unit, the same architecture used by large-scale conferencing platforms. Low latency, high quality, no fuss.
The App
A place to talk, hang out & make your own
Concord is a complete space for your people: voice, video, chat, and the details that make a group feel at home. Privacy is built in, so convenience never asks you to give up control.
Communication
Seven Audio Quality Tiers
From bandwidth-conscious Minimum mode to Studio-quality streams, you control exactly how much fidelity you need. Admins can set quality floors and ceilings per channel.
Video Calling & Screen Sharing
Full video with codec selection, AV1, H.264, VP9, and VP8. Share your screen in a click; codec priorities adjust automatically to your hardware and connection.
Direct Messages
Private 1:1 conversations with the same end-to-end encryption as channel messages. No one in the middle.
Real-Time Presence
See who's online, in a voice channel, or away, live, without refreshing. Presence flows through WebSocket connections kept in sync across all your devices.
Picture-in-Picture Voice
Keep voice controls visible while you do other things, with a compact floating PiP window.
Privacy & Security
End-to-End Encrypted by Default
Every message in every channel is encrypted with AES-256-GCM before it leaves your device. Keys are wrapped with RSA-OAEP 4096-bit and never accessible to our servers. Not even we can read your messages.
Credentials Stay on Your Device
Auth tokens live in your OS's native secure storage, macOS Keychain, Windows DPAPI, or Linux libsecret. Concord Voice never stores plaintext credentials anywhere.
Single-Use Refresh Tokens
Every refresh issues a new token and invalidates the old one. If a token is ever reused out of sequence, Concord Voice detects a potential breach and flags it automatically.
No Biometric Requirements
Where we can legally get away with it, we don't require a phone number, government ID, or biometric to make an account. Where the law requires it, we apply the minimum controls and purge data we no longer need.
Rate Limiting & Account Protection
Redis-backed per-IP and per-user rate limiting guards against brute force. After five failed logins, accounts lock temporarily with exponential backoff.
Make It Yours
Servers, Channels & Categories
Organize your community exactly how you want, create servers, build channel hierarchies with drag-and-drop categories, and tidy everything with server folders.
Custom Themes
A 3-color theme system that lets you tune the feel. Make Concord Voice look exactly how you want it.
Profile Cards & Avatars
Custom banners, avatars, and color accents on every profile. Show up as yourself.
Emoji Picker
A full emoji picker with search, lazy-loaded so it never slows you down.
Want to see more?
See how Concord Voice is built.
Explore the architecture and design, inspect the source, or take the Beta for a spin.