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GtkHash vs CHK Hash Tool: catalog facts
GtkHash	CHK Hash Tool
Free Free and open source under the GPL-2.0-or-later licence.	Free Free to use freeware.
Linux	Windows
Supports MD5, SHA1, SHA2, SHA3 and BLAKE2 Graphical alternative to md5sum and sha256sum	Portable, no installation needed Many hash algorithms including BLAKE3 and xxHash3
Checksums only, no signature verification described Plain GTK interface rather than a modern GNOME design	Windows only Closed source
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-2.0-or-later	License: Freeware
Not stated if an account is needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 2, 2026

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