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IObit Unlocker vs Handle: catalog facts
IObit Unlocker	Handle
Free Free to download and use.	Free Free download from Microsoft Sysinternals.
Windows	Windows, Command line
Fixes files that cannot be deleted or moved because they are in use Simple single-purpose tool	Finds which program has a file locked Covers registry, thread, process and other handle types
Windows only The download page promotes other IObit products such as Advanced SystemCare	Command line only; Process Explorer offers a GUI equivalent Requires administrative privileges
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License: Sysinternals EULA
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 8, 2026

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