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RegScanner vs O&O RegEditor: catalog facts
RegScanner	O&O RegEditor
Free Freeware from NirSoft with no paid tier.	Free Freeware under the O&O end-user licence.
Windows	Windows
Shows all search results at once instead of pressing F3 Filters by type, data length, modified date and owner	Fast search across the registry Backup functions before making changes
Remote Registry scanning can be slow Deleting keys is risky even with the automatic backup	Windows only Closed source freeware
Downloadable app	Downloadable app
Closed source	Closed source
License: Freeware	License: Freeware
No account needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.