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HashCheck vs RapidCRC Unicode: catalog facts
HashCheck	RapidCRC Unicode
Free Free and open source under the BSD-3-Clause license.	Free Free and open source under the GPL.
Windows	Windows
Integrates hash checks into Windows Explorer Supports SHA-2 and SHA-3	Multithreaded hashing with asynchronous I/O Unicode-aware SFV and checksum files
Windows Explorer extension	Windows only Source code documentation is sparse
Downloadable app	Downloadable app
Open source	Open source
License: BSD-3-Clause	License: GPL-2.0
Not stated if an account is needed	No account needed
Not stated if it 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.