Safe cleaning: what can go and how to undo it

The hard part of cleaning is not finding large folders. It is knowing which ones come back with a command and which ones hold your work. These guides are about telling the two apart.

The four risk levels, each with an example: Safe node_modules, Your call a simulator, Careful an Xcode archive, Protected .env

Safe cleaning

What is safe to delete on a developer's Mac

One question sorts every folder on a developer's Mac into four levels: can a command bring it back exactly? The full lists, and four checks before deleting.

11 Nov 2026, 5 min read

The command rm -rf node_modules ending in the word gone, next to the steps Clean, quarantine and Undo

Safe cleaning

rm -rf has no undo: cleaning with a quarantine

rm -rf deletes at once and for good. A quarantine is a move you can reverse. How to build one with mv, when the Trash is enough, and how Wipzy's Undo works.

11 Nov 2026, 5 min read

A table of seven tools, npkill, kondo, Mole, DevCleaner, CleanMyDev, MegaCleaner and Wipzy, with how each removes files and the way back

Safe cleaning

Developer disk cleaners compared: npkill, kondo, Mole

A fair look at npkill, kondo, Mole, DevCleaner, CleanMyDev, MegaCleaner and Wipzy: what each cleans, how it removes files, and whether you can undo it.

11 Nov 2026, 6 min read

New guides arrive in the Atom feed of the Wipzy blog. To see the app these guides lead to, watch Wipzy clean a Mac in 47 seconds, read how the four risk levels work, or see what is free and what Pro adds.