PlantUML package is free to take. It has few open bugs, mostly related to Java dependencies and it needs an update from upstream. Otherwise it requires very low effort to maintain it, upstream is stable and friendly.
https://plantuml.com/ https://src.fedoraproject.org/rpms/plantuml https://bugzilla.redhat.com/buglist.cgi?bug_status=NEW&bug_status=ASSIGN...
Jan