Synalyze It! is a simple to use Mac OS X app which lets you easily edit and analyze binary files of any size. It's the little brother of Synalyze It! Pro but still much more than a regular hex editor.

Synalyze It! features enhanced support for many character encodings and it will allow you to interactively define "grammars" for various file formats. Several grammars do already exist and can be downloaded for free. Files are decoded automatically using grammars!

Synalyze It! is perfect for editing saved games or other unknown binary file formats and actively supports reverse engineering.

Here are some key features of Synalyze It!:
* Hex Editor & Viewer (change, insert and delete quickly in files of unlimited size)
* Printing
* Histogram view
* Go to Position in file
* Save selected bytes
* Compare code pages
* Incremental text search with encoding selection
* Find text
* Find numbers
* Search for masks
* See all strings in a file

What's New

Version 1.22

* Support for Unicode 10
* Fixed text encoding issues
* Fixed minor issues

Ratings and Reviews

Did not work as shown in tutorials


Most of the features are missing. You can’t apply grammars and the tutorial directions on the website do not work. Dropdown menus are different and are missing the option to insert, which you need in order to apply/create a grammar.

Developer Response

Thank you for the feedback! While I understand that it's frustrating when software doesn't work as expected I'd appreciate if you could describe me in an email briefly what exactly didn't work or is missing - .

With this application it should be possible to apply all grammars and do the same what's described in the tutorials. I'm confident we can make it work also for you.

great app at a great price!


Very nice and easy hex editor for the mac (native app). Worth the low price. Grammar support? AWESOME!!!
please support this developer

Great for a free app!


I had been needing a basic binary file editor, but this is much beyond that. I have only had a small amount of time to mess with it. In that time I installed the sample grammars from their web site and was able to parse the headers of a png file. This could be extremely useful if you have to deal with custom binary file formats.

For a free app, this is well worth the download. Kudos to the author for making this tool available for free.


Andreas Pehnack
40.6 MB
Developer Tools
English, German
Age Rating
Rated 4+
© 2010-2017 Andreas Pehnack


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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