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Registry Explorer vs O&O RegEditor: catalog facts
Registry Explorer	O&O RegEditor
Free Free to download; the author accepts support through GitHub Sponsors and PayPal.	Free Freeware under the O&O end-user licence.
Windows	Windows
Opens multiple hives side by side Reads locked registry files	Fast search across the registry Backup functions before making changes
Windows only and requires .NET 9 Aimed at forensic analysis rather than everyday registry editing	Windows only Closed source freeware
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License: Freeware
No account needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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