The Janus platform is distributed under the JFSL license by default. Two other licenses (JIUL and JCRL) are available under conditions for whose who do not want to follow the JFSL license.
Janus Free Software License (JFSL)
You are free:
|to copy, distribute and transmit the work||to adapt the work|
Under the following conditions:
Janus 0.4 and higher versions are released under GPLv3 license, meaning that you can use it for free as long as you fulfill all GPLv3 statements.
Janus Internal Usage License (JIUL)
For clients that cannot or do not want to use software licensed under GPLv3, we offer a commercial license.
Janus Commercial Redistribution License (JCRL)
We also provide a range of commercial licenses that allow to integrate Janus into other commercial products or projects without any obligation to publish the source code of your derivative work on the Internet, as the GPLv3 normally requires.
Obtain a JIUL or JCRL License
We handle the entire purchase procedure directly, for this reason you will not find an e-commerce portal selling Janus commercial licenses.
If you are interested in purchasing a license or you need further details, don't hesitate to contact us at sales[at]janus-project.org. We will be glad to provide you with all the information you need as well as the license agreements.
All Redistribution Licenses require an agreement to be signed in two copies by the legal representative of your company and by a Janus consortium legal representative. Each party keeps a copy of the agreement. Payments must be performed via bank/wire transfer.
What is the GNU GPLv3?
The GNU General Public License version 3 (GNU GPLv3 or simply GPLv3) is a widely-used free software license, originally written by Richard Stallman for the GNU movement. The GPLv3 is an example of a powerful copyleft license that requires derivative works to be released to the public under the same license. You can have a look at the full GPLv3 text or you can learn more on Wikipedia.