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GtkHash vs Collision: catalog facts
GtkHash	Collision
Free Free and open source under the GPL-2.0-or-later licence.	Free Free and open source under the BSD 2-Clause licence.
Linux	Linux
Supports MD5, SHA1, SHA2, SHA3 and BLAKE2 Graphical alternative to md5sum and sha256sum	Simple graphical way to verify downloads No need for terminal checksum commands
Checksums only, no signature verification described Plain GTK interface rather than a modern GNOME design	Linux only Focused on hashing, with no other file tools
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0-or-later	License: BSD-2-Clause
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 1, 2026

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