Mumble is an Open Source, low-latency and high-quality voice-chat program written on top of Qt and Opus.

There are two modules in Mumble; the client (mumble) and the server (mumble-server formerly known as murmur). The client works on Windows, Linux, FreeBSD, OpenBSD, and macOS, while the server should work on anything Qt can be installed on.

The documentation of the project can be found on the website.

We always welcome contributions to the project. If you have some code that you would like to contribute, please go ahead and create a PR. While doing so, please try to make sure that you follow our commit guidelines.

If you are new to the Mumble project, you may want to check out the general introduction to the Mumble source code.

Mumble supports various languages. We are always looking for qualified people to contribute translations.

We are using Weblate as a translation platform. Register on Weblate, and join our translation project.

Mumble supports general-purpose plugins that can provide functionality that is not implemented in the main Mumble application. You can find more information on how this works and how these have to be created in the plugin documentation.

For information on how to build Mumble, check out the dedicated documentation.

Make sure to switch to the appropriate branch in this repository to get the correct build documentation. The current master branch contains the unstable code for a future release of Mumble. If you want to build an already released stable version of Mumble, e.g. 1.5.735, select the corresponding branch, e.g. 1.5.x, in the dropdown menu above. Alternatively, use the documentation in the respective release tarball.

If you want to report a bug or create a feature request, you can open a new issue (after you have checked that there is none already) on GitHub.

We graciously acknowledge that this program uses free code signing provided by