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I am looking for a utility that gives me the ability to specify a binary file format and then interpret a file of bytes according to that format. (Something along the lines of the 010 Editor, but infinitely more cost-effective). Something that runs on Mac OS X would be preferred, but I'm interested to see what all is out there in general (while more of a hassle I'd be willing to run a tool on Windows if it were superior.)

What's your preference?

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"specify a binary file format and then interpret a file of bytes according to that format" Sounds like an "Application Program" to me. Could you be more specific on what "interpret" means if it doesn't mean write an application. –  S.Lott Mar 15 '10 at 21:10
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If you like 010, at $49.95 doesn't seem exactly the end of the world if you need it for personal use. –  Remus Rusanu Mar 15 '10 at 21:12
    
@Remus It wouldn't be for personal use, and if I'm going to pay for something ideally it'd be for the Mac. –  fbrereto Mar 15 '10 at 21:21
    
@S.Lott: I'm thinking something along the lines of what 010 Editor does where you can specify a template that describes a binary file format. I don't want to have to write an application, rather find one that solves the general problem of binary file format formats (if you will) and interpreting a binary file against one of those format formats. –  fbrereto Mar 15 '10 at 21:25
    
Oh, missed that is not an OS X app... sry –  Remus Rusanu Mar 15 '10 at 21:27

4 Answers 4

One free Hex editor which does include viewing data in various formats is Bless, a GTK based tool for Linux. I'm not aware of a OS X port of it, but source is available, though it does use both GTK and Mono.

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Are just looking for a good Hex Editor? There's one open source projects called Hex Fiend that you might find to your liking.

Otherwise, it might be worth a shot to get the 010 Editor working through WINE.

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Quadrivio General Edit Pro is far from free, but it is a Mac app.

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Synalyze It! is not free but it's cheap. The standard version is $5 and the pro version is $25. It should do exactly what you want.

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