The following sections provide information about legal aspects related to Crossbar.io.
The Crossbar.io source code is licensed under the EUPL-1.2. You can read more about the European Union Public Licence, you will find a copy of the license in the repository here and references to this license at the top of each source code file (SPDX-License-Identifier: EUPL-1.2).
All rights to the Crossbar.io source code remain exclusively with Crossbar.io Technologies GmbH. All (external) contributors sign a Contributor Assignement Agreement
The Crossbar.io application templates and instances of code generated from these templates are licensed under the BSD 2-clause license.
We see any code which connects to Crossbar.io via WAMP as a separate work. The Crossbar.io license (the EUPL-1.2) 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 [email protected] 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).
Crossbar.io is able to generate applications from application templates. The code for application templates within this folder (and folders beneath) is licensed under the BSD 2-clause open-source license or the Apache 2.0 license.
The same licenses applie to the code generated from the application templates. E.g., when you do
crossbar init --template hello:python --appdir $HOME/hello
Crossbar.io will generate a new WAMP application in the $HOME/hello directory from the application template in hello/python. All files generated in $HOME/hello are licensed under above licenses.
The licenses allow you to use the template code and generated code in your own applications, including closed-source and commercial applications.
The Crossbar.io documentation is licensed under a Creative Commons license: the CC BY-SA 3.0.
"WAMP" and "Crossbar.io" are trademarks of Crossbar.io Technologies GmbH.
The Crossbar.io symbol
and the Crossbar.io logo
and the Crossbar.io extended logo
are design marks of Crossbar.io Technologies GmbH.
All rights to above trademarks remain with Crossbar.io Technologies GmbH and any use of these requires prior written agreement by Crossbar.io Technologies GmbH.