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Okteta vs Synalyze It! Pro: catalog facts
Okteta	Synalyze It! Pro
Free Free and open source, licensed under GPL-2.0 or GPL-3.0.	Paid Paid app, sold directly and on the Mac App Store.
Linux	macOS
Structures tool for decoding binary formats with custom definitions Built-in checksum and hash calculator	Automatic decoding of binary structures next to the hex view Grammars can be built interactively in the GUI
Best integrated with a KDE Plasma desktop Project wiki page is not kept up to date	macOS only Paid software
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-2.0 OR GPL-3.0	License not stated
No account needed	Not stated if an account is 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.