Mumble

Low-latency, open-source voice chat built for gaming — self-host your own server with no subscription required.

Open source alternative to:

Mumble is a veteran open-source voice chat application built specifically for low-latency, high-quality audio during gaming sessions. It uses a client-server model where you run your own Murmur server, giving you full control over who can connect and at what audio quality — with no monthly fees, no user caps imposed by a third party, and no data sent to corporate infrastructure.

The desktop clients for Windows, macOS, and Linux are lightweight and highly configurable. Features include push-to-talk and voice activation, per-user volume adjustment, positional audio (so voices come from where players are in the game world), and a powerful permission system for organizing large communities into channels and groups.

Compared to Discord's voice channels, Mumble offers lower latency and greater configurability at the cost of a more manual setup. For gaming groups and LAN communities that value audio quality and self-sovereignty over convenience, Mumble remains a solid, battle-tested choice.