Mumble
Mumble is an open-source, low-latency, high-quality voice chat application designed for groups that need real-time communication. Built around a client-server model with the lightweight Murmur server, it has been the standard for gaming teams and online communities for over a decade, delivering crystal-clear voice with minimal delay.
Key Features
- Ultra-low latency — Sub-100ms voice transmission tuned for fast, real-time conversation.
- High-quality audio — Opus codec support with adjustable bitrate for clear voice even on slow connections.
- Positional audio — In supported games, voices are positioned in 3D space based on where players are in the world.
- Murmur server — Lightweight dedicated server that runs on minimal hardware and supports thousands of users.
- Fine-grained permissions — Per-channel access control for who can talk, listen, register, and moderate.
- Certificate-based identity — Authenticate with client certificates instead of passwords for secure, persistent identities.
- Text chat — Built-in text messaging alongside voice channels for links and notes.
Why Use Mumble?
Mumble is the voice tool of choice when latency and audio quality matter more than flashy features. It is free, open source, and self-hostable — run your own Murmur server and your voice traffic never leaves your control.
Use Cases
- Gaming teams coordinating in real time during matches
- Online communities and guilds running persistent voice servers
- Self-hosters who want private voice channels without third-party services
- Podcasts and remote groups that need studio-quality voice over the internet
Platform
Linux · macOS · Windows · iOS · Android
Licence
BSD-3-Clause