On OS X a long time only some hex editors existed that offered very basic features.
Synalyze It! was developed to allow much easier analysis of binary files on the Mac.
Build interactively a grammar for the file you want to decode and apply that grammar to other files of the same type. It has never been easier to understand the contents of binary files.
Download it today and enjoy the application you missed all the years!
If you are serious about reverse engineering of binary files you can’t afford not to have it