The Versions Maven Plugin is used when you want to manage the versions of artifacts in a project's POM.

A plugin to allow execution of system and Java programs

Plexus Maven Plugin

This is the Mojo's Maven plugin for Cobertura. Cobertura is a free Java tool that calculates the percentage of code accessed by tests. It can be used to identify which parts of your Java program are lacking test coverage.

This Plug-In generates reports based on the FindBugs Library

Maven plugin that generates JDepend reports for your projects.

Maven plugin that can be used to access various operations on a given URL using a supported maven wagon. Supports recursive upload, download, and list directory content functionality.

Provides support for execution, compilation and other facets of Groovy development.

The Properties Maven Plugin is here to make life a little easier when dealing with properties. It provides goals to read and write properties from files.

Maven plugin which assembles files into an RPM package for installation on various target UNIX systems.