Mumble
Low-latency, high-quality VoIP voice chat client and server
8.2k stars 1.4k forks last commit first released
Actively maintained
Last commit 25 Aug 2026.
Mumble is an open-source voice chat platform focused on low-latency, high-quality audio for groups and communities. It consists of a desktop client (Mumble) and a server component (mumble-server, formerly Murmur) to host your own voice infrastructure.
Key Features
- Low-latency, high-quality voice communication using the Opus codec
- Encrypted communication with certificate-based (public/private key) authentication support
- Channels and an extensive permission system (ACL) for complex community setups
- In-game overlay and positional audio features for supported games and setups
- Extensibility via plugins and server integration APIs (including Ice-based tooling)
- Cross-platform client support (Windows, macOS, and Linux; server runs on many platforms)
Use Cases
- Private voice servers for gaming groups, clans, and large online communities
- Team voice communication for organizations that need control over privacy and access
- Audio collaboration and recording scenarios such as podcasts and multi-user sessions
Mumble is a mature, widely used VoIP solution that prioritizes responsiveness, sound quality, and administrative control. It is well-suited for anyone needing reliable hosted voice chat with fine-grained permissions and strong encryption.
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