Modules are self contained pieces of software, that can be added to Phorum to change or extend its functionality. Modules can do this without having to change anything in the standard Phorum distribution files or database structure.

The big advantage of modules this is that upgrading the Phorum code is easy (no file changes to redo after upgrading) and that modules can be easily uninstalled when needed.

Installing a module means: drop the code in the Phorum mods directory, go to the admin "Modules" page, enable the module and enjoy! One additional thing that might be needed, is editing one or more template files to display data that is generated by the module.