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ImHex vs Synalyze It! Pro: catalog facts
ImHex	Synalyze It! Pro
Free Free and open source under the GPL-2.0.	Paid Paid app, sold directly and on the Mac App Store.
Linux	macOS
Pattern Language for decoding file structures Built-in data analysis and visualization	Automatic decoding of binary structures next to the hex view Grammars can be built interactively in the GUI
Pattern Language takes time to learn More complex than a basic hex viewer	macOS only Paid software
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-2.0-only	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.