Janitors can approve/delete/undelete posts and revert a user's entire tag or note edit history.

Mods can ban users, lock/sticky forum threads, double delete posts, perform mass tag edits, edit or delete users' comments/private pools/forum posts, lock/unlock/rename/delete wiki entries as well as everything above.

Admins can reset passwords for users, promote/demote users, create/delete tag aliases and implications, and edit users' upload limits as well as everything above.