What is Other storage on Mac? Other is a category label in macOS’ System Information tool. It represents all those files that do not fall under the standard storage category labels (Apps, Documents, iCloud Drive, etc.) but still consume a noticeable chunk of space on your system. What exactly are these file types, you ask? Well, any types of files on your Mac that belong to one of the obscure categories like the user and system caches, disk images and archives, app extensions and plugins, and system and temporary files fall under the Other storage. You can find these files by going into System Information.