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Synalyze It! Pro vs Okteta: catalog facts
Synalyze It! Pro	Okteta
Paid Paid app, sold directly and on the Mac App Store.	Free Free and open source, licensed under GPL-2.0 or GPL-3.0.
macOS	Linux
Automatic decoding of binary structures next to the hex view Grammars can be built interactively in the GUI	Structures tool for decoding binary formats with custom definitions Built-in checksum and hash calculator
macOS only Paid software	Best integrated with a KDE Plasma desktop Project wiki page is not kept up to date
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-2.0 OR GPL-3.0
Not stated if an account is 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 1, 2026

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