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The Jamulus software enables musicians to perform real-time jam sessions over the internet. There is one server running the Jamulus server software which collects the audio data from each Jamulus client, mixes the audio data and sends the mix back to each client.

Jamulus is Open Source software (GPL, GNU General Public License) and runs under Windows (ASIO), MacOS (Core Audio) and Linux (Jack). It is based on the Qt framework and uses the OPUS audio codec.

The required minimum internet connection speed is 200 kbps for the up- and downstream. The ping time (i.e. round trip delay) from your computer to the server should not exceed 40 ms average.

The source code is hosted at Sourceforge.net.

Get Internet Jam Session Software at SourceForge.net. Fast, secure and Free Open Source software downloads

Download and Installation

a Windows installer at the Sourceforge.net download page.

The Jamulus software requires an ASIO sound card driver to be available in the system. If your sound card does not have native ASIO support, you can try out the following alternative:

The ASIO buffer size should be selected as low as possible to get the minimum audio latency (a good choice is 128 samples).

Example Windows client installation with audio device Behringer U-CONTROL UCA202.

Help (Software Manual)

Detailed information about the Jamulus usage can be found on the following pages:

A discussion forum can be found here.


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