I want for a nice diff tool on Mac that doesn’t cost an arm and a leg like Kaleidoscope. Right now I am using one called CompareMerge2 from the App Store which is pretty good.
There's a free and opensource program called `diffpdf` that can compare both visually and by text. It has a GUI and works great, though it doesn't specially handle layout changes. It's included in the normal package sources in most Linux distros:
Visual diff is very useful to me. I use Meld which works really well for now. But I would love to see a terminal based side-by-side diff view. Does tig have that?
Visualizing diffs inside the app is also a must-have for me. Fewer clicks = simpler = easier to use = better.
I also note that the apparent keyboard shortcut for "Show Difference" is just "D". Not command-D. Just "D". Not only is this highly unusual (no keyboard modifier like Cmd/Ctrl/Shift/etc.) but it also doesn't work.
I spent a short time trying to find a pretty diff tool, but couldn't really find one to my liking. So just ended up using a bash function that did some decorating on the diff output.
While Kaleidoscope is Mac only, Diffchecker is cross-platform and still under active development. We just released Dark Mode and Spreadsheet diff is on the way (while Kaleidoscope has seemingly stopped development in late 2017).
It's still a great tool though that works for a lot of people.
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