JOMDoc is an open source product. The complete source code, documentation, and files required to build the library are available for download from  https://jomdoc.omdoc.org/

The open source license permits you to use JOMDoc at no charge under the condition that if you use the software in an application you redistribute, the complete source code for your application must be available and freely re-distributable under reasonable conditions. For other licensing contact Michael Kohlhase <m dot kohlhase at jacobs-university.de>.

You may find the open source license here.