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CHK Hash Tool vs CalHash: catalog facts
CHK Hash Tool	CalHash
Free Free to use freeware.	Free Free to use; the developer accepts donations.
Windows	macOS
Portable, no installation needed Many hash algorithms including BLAKE3 and xxHash3	Calculates and compares checksums in a simple Mac interface Builds matched to each macOS release
Windows only Closed source	macOS only Each build works only on its matching macOS version
Downloadable app	Downloadable app
Closed source	Closed source
License: Freeware	License not stated
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 2, 2026

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