The 1.2.19 version of Mumble for Mac is provided as a free download on our website. The most popular version among the application users is 1.2. This free app is suitable for Mac OS X 10.5.0 or later. The application belongs to Communication Tools. The bundle id for this application is net.sourceforge.mumble.Mumble. Mumble-1.2.3.dmg is the common file name to indicate this application's installer. This free software for Mac OS X was originally created by Thorwald Natvig.
From the developer:
Low-latency, high-quality voice communication for gamers.
You may want to check out more Mac applications, such as ExpressTalk, myPhoneDesktop or Phone Amego, which might be similar to Mumble.