RDQLPlus was built with and includes the following open source packages:
- Jena by The Jena Developers, which includes:
- ZVTM by Emmanuel Pietriga
- Mckoi by Tobias Downer
A separate download, the GraphViz package by AT&T Labs Research is also instrumental to RDQLPlus' operation.
RDQLPlus includes software developed by the Apache Software Foundation.
Note: Licenses of libraries/software included with RDQLPlus can be found in the distribution's "license" directory.