Cachesweep

Watch your disk refill live.
You upgrade macOS, 70 GB frees up, and a week later it's gone. Cachesweep watches your file system in real time, so you can finally see where your storage is actually going.

See which folders are growing, how recently they changed, and how much space they've accumulated over time. Cachesweep keeps a persistent history across restarts and lets you spot storage hogs before they become a problem with helpful notifications like: "DerivedData grew 4 GB this week."