Regshot

Open source snapshot tool that compares registry and file system states before and after changes to show exactly what an installer modified. The maintained GitHub fork states MIT; SourceForge lists LGPL-2.0.

Get it

The promise

• ✓ No ads
• ✓ No purchases
• ✓ No subscriptions
• ✓ No trials
• ✓ No nagging
• ✓ No surprise bundles

Something wrong?

Reports go to a human review queue. No timeline promised — this is a small pilot, but every report gets read.