Documentation > Crossbar License

Crossbar.io Code License

Code

The Crossbar.io source code is licensed under the GNU AGPL 3.0. You can find a copy of the license in the repository here and references to this license at the top of each source code file.

All rights to the Crossbar.io source code remain exclusively with Crossbar.io Technologies GmbH. All external contributors need to sign a contributor assignment agreement (CAA) when contributing to the project.

The Crossbar.io application templates and instances of code generated from these templates are licensed under the BSD 2-clause license.

WAMP clients as separate works

We see any code which connects to Crossbar.io via WAMP as a separate work. The Crossbar.io license (the AGPL v3) does not apply to WAMP clients. This applies irrespective of where these run, i.e. also to components which are run side-by-side within an native worker of type router, which are run in a native worker of type container or in a guest worker. We promise to stand by this view of the license. If you need further assurance, you can email us at contact@crossbario.com for a signed letter asserting the above promise.

We release all our client libraries (those provided by the Autobahn project under non-copyleft licenses, which allow their use for closed-source & commercial software. For other client libraries see their respective licenses (these appear to be universally non-copyleft as well).