Space Hog
See what fills your drive: paste a listing from du, ls, find or a Drive export and the page totals the space by folder and kind of file, finds the biggest files and likely duplicates, and draws a treemap, all free. A metered run plans what to archive, which extra copies to remove and what to ask about first - nothing deletes a file's only copy. Built on the SkillSafe skill @googleworkspace/recipe-find-large-files.
gpt-terra Every public app is built from a security-scanned skill and must pass a clean scan — skill and frontend — before it can be listed. Have a skill of your own? Turn it into an app — or read the step-by-step walkthrough.