Licenses and Legal Matters
This is a guide from developers for developers and therefore not an official legal document. We try to be as accurate as possible but cannot guarantee that there are no mistakes. If in doubt, please send a question to the Opencast developer mailing list, to the Opencast Board or to the Apereo Foundation, preferably in that order.
Which Licenses May I Use for Opencast?
All libraries that are used in Opencast need to be compatible with the Educational Community License version 2.0.
In short, if the license is on:
- the Apereo or Apache Category-A list, it is fine to use the library.
- the Apereo or Apache Category-B list, we may use it unmodified. Please avoid Category-B if possible.
- the Apereo or Apache Category-X list, we cannot use it.
Everything else needs to go to the Apereo foundation for approval.
These lists, along with a more detailed explanation, can be found on the Apereo page about practices on third-party licenses
Here is the slightly longer section from the „Apereo Licensing & Intellectual Property Practices“ page:
How To Label Third Party Libraries
Third party libraries that are used within an Opencast system in production need to be listed in the
which can be found in the root directory of our code repository. Libraries and tools that are only used for testing or
building the project, or are run via system call, do not need to be listed (e.g. maven, maven plugins, junit, ...).
(c) 2010-2014 Google, Inc. http://angularjs.org
Java Libraries / Maven Dependencies
Java dependencies are listed pre module. Maven provides some helpful tools to list dependencies and even report
libraries. Have a look at the output of
./mvnw dependency:list and
./mvnw dependency:tree or generate a full report
for a module using:
./mvnw -s settings.xml project-info-reports:dependencies
This will create a file
target/site/dependencies.html containing a full report, including the library versions and
Finally, add the library and license to the
NOTICES file in the form:
GroupId ArtifactId License
commons-io commons-io The Apache Software License, Version 2.0