git-changelog-maven-plugin · Finds all git commits that's in the current branch but not in another. The typical use case is to see what changes are in this branch in relation to the production one. Output is a JSON file that can be used to report on the status of the branch.
project-info-maven-plugin · Light-weight project information extractor, for reporting optionally filtered dependencies and some other things on a project. Useful for collecting version information and who depends on who in an environment with multiple servers, perhaps many many small services.
