When comparing WinHex vs Hexinator, the Slant community recommends Hexinator for most people. In the question“What are the best hex editors?” Hexinator is ranked 6th while WinHex is ranked 9th. The most important reason people chose Hexinator is:
Hexinator has some advanced reverse engineering features. You can create a "grammar" for custom binary file formats and let software parse files automatically.
Specs
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Pros
Pro Timeless masterpiece, fast and full-featured
Ability to read filesystems by sector, understands common formats (with ability to add your own), compare files, and even has a histogram tool.
Pro Basic hex editing features are free
Hexinator has some advanced reverse engineering features. You can create a "grammar" for custom binary file formats and let software parse files automatically.
Pro Portable
A portable version is available.
Pro Automatic file decoding
Hexinator decodes various file formats automatically with "grammars". There are already many grammars for dozens of file formats.
Pro Scripting engine
Allows scripting with Lua or Python (Paid version only).
Cons
Con Pricey
The highlighting is in paid version after the trial period, and 80$ is not an attractive price.