HxD is a freeware editor supporting disk, memory, and file hex editing, as well as a secure file deletion tool (called a “file shredder” by HxD). HxD’s webpage states the app works on every Windows OS ...

Editing a firmware file in a hexadecimal, or hex, editor can allow you to modify a device's behavior. For example, you can change the speed of manufacturing equipment or enable hidden features on a ...

HexEdit is an open-source hexidecimal file editor for the Macintosh. Developer Lane Roathe indicates that a new version, 1.72, is ready for download on SourceForge. With HexEdit, programmers can edit ...

I've been using Hex Fiend, and while pretty good and FOSS, it still lacks in some of the above (especially in UI). Looked at Synalyze It! and while it looks pretty much perfect with some nifty syntax ...

Get a hex editor that allows you to view a file in binary? That would be the most obvious solution. There are scores of freeware and shareware hex editors out there.