Differences between what? The Apple Developer tools (free from ADC) ship with a pretty funky visual front-end to diff. As diff is a command line Unix tool it's for text files only...
Yes, for text files. Hmmm... I have the dev tool installed. I'll try to find it.
Thanks
Eric
Araxis Merge (a well-known comparison/merge application for Windows) is currently being re-written for OS X as a native Cocoa application. It's early days yet, but an early-access test release is available:
http://www.araxis.com/merge_mac/
Disclosure: I work for Araxis.
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Daniel Neades
Araxis Ltd
http://www.araxis.com/