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RapidCRC UnicodeHashCheck
Free

Free and open source under the GPL.

 Free

Free and open source under the BSD-3-Clause license.

Windows Windows
  • Multithreaded hashing with asynchronous I/O
  • Unicode-aware SFV and checksum files
  • Integrates hash checks into Windows Explorer
  • Supports SHA-2 and SHA-3
  • Windows only
  • Source code documentation is sparse
  • Windows Explorer extension
Downloadable app Downloadable app
Open source Open source
License: GPL-2.0 License: BSD-3-Clause
No account needed Not stated if an account is needed
Works offline Not stated if it works offline

Checked October 2, 2026

Checked October 8, 2026

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