Kaleidoscope Four: The World's Best Comparison and Merge Tool for the Mac

Kaleidoscope four is a new version of the world's best comparison and merge tool for the Mac. It adds syntax coloring for all common markup and programming languages with three themes to choose from. There's also powerful new text filters that can clean up your comparison and hide differences not relevant to the task. Use the coupon code launched to get a 10% discount for the first year.