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CHK Hash Tool vs GtkHash: catalog facts
CHK Hash Tool	GtkHash
Free Free to use freeware.	Free Free and open source under the GPL-2.0-or-later licence.
Windows	Linux
Portable, no installation needed Many hash algorithms including BLAKE3 and xxHash3	Supports MD5, SHA1, SHA2, SHA3 and BLAKE2 Graphical alternative to md5sum and sha256sum
Windows only Closed source	Checksums only, no signature verification described Plain GTK interface rather than a modern GNOME design
Downloadable app	Downloadable app
Closed source	Open source
License: Freeware	License: GPL-2.0-or-later
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 1, 2026

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