Since World of Warcraft Beta, Cosmos has been a collection of add-ons utilizing centralized function libraries and an easy-to-use configuration interface to limit the need for using slash commands on your console input line.

Most of the Cosmos add-ons enhance the functionality of your game interface without changing the look of your interface. Plus, as tjhey're usually created by WoW players themselves, the add-ons are constantly under development, improving and enhancing their functionalities and making your WoW experience even better.

The list of add-ons included in Cosmos is almost endless: AllInOneInventory to have all your bags under a single window; Alpha Map to display a transparent map over your screen; MapNotes to add notes to your map; and many other add-ons to improve chat functions, action bar configuration, spell casting and more.