From phpBB Development Wiki
AutoMOD is a tool designed to parse and automatically install MODX MODifications for phpBB3. It is the successor to phpBB2's EasyMOD. It also has the ability to uninstall MODs. It is a useful tool for MOD authors and end users alike: All MODs are installed with AutoMOD prior to being accepted in the MODs Database. As such, any MOD listed in the MOD Database should install with AutoMOD. Support for AutoMOD is available via the forums.