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Synalyze It! is a simple-to-use OS X Hex Editor which will allow you to easily edit and analyze binary files of any size.

Synalyze It! features enhanced support for many character encodings and enables you to interactively define "grammars" for various file formats to speed up analysis and reduce manual decoding of files. Incremental search for strings and numbers, printing and other features make it a quite powerful tool.

Here are some key features of Synalyze It!

  • Hex Editor
  • Printing
  • Histogram view
  • Automatic suggestion of grammars
  • Compare code pages
  • more...

What's New

Version 1.8:
  • New: Automatic backups
  • New: Fixed number of columns in hex editor selectable
  • New: Added methods for processing of parsing results
  • New: Much faster processing of scripted elements
  • Fix: Display of small floating-point numbers
  • Fix: Minor issues and stability improvements


  • OS X 10.7 or later

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Synalyze It! User Discussion

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Negritude Member IconComment+1082

FYI, the developer seems to now be releasing this as a universal Intel/PPC binary.

Reply0 replies
Ionos Member IconReview+5

Very helpful tool for working with binary files. Developer is very responsive and takes feedback into consideration, which gives this app great potential.

Reply0 replies
Version 1.0.1
Zuulito Member IconComment+38

This is great !
A kind of resedit for binary files.
I suggest you join grammars for as many file types as you can !
Maybe you could federate grammars, so that people could send them to you,
and maybe we could get them with each updates, or download them automatically
once vetted by you ?

Keep up the good work !

Reply2 replies
Version 0.9.6
Synalysis (Developer)

There's a new page - http://www.synalysis.net/the-grammar-page.html - that provides grammars for some file formats.

Synalysis (Developer)

Now it's even more comfortable: This page can be used to install grammars with one click: http://www.synalysis.net/formats.xml . Also, grammars are now suggested automatically if you open a file that's supported already.

Ean Member IconComment+223

public beta = not free

Reply5 replies
Version 0.9.2
Synalysis (Developer)

Don't worry: what you get here will remain free :)


But MacUpdate is showing a price tag of $29.99...

Synalysis (Developer)

Don't know how this happened, I requested to update the entry.
Only Synalyze It! Pro costs $ 29.99 but there is still a free version with a reasonable feature set.


The "free" version is $4.99 on the Apple Store. A very reasonable price, but not the same thing as free.

Synalysis (Developer)

You're right - $ 4.99 is not free.
Just download the free version on http://www.synalysis.net/downloads/

user icon+1
Version 1.1.5
user icon+0
Version 1.0
> 4 3


Current Version (1.x)


Downloads 8,850
Version Downloads 82
License Commercial
Date 11 Jun 2014
Platform Intel 64 / OS X
Price $6.99