When comparing Kompare vs AraxisMerge, the Slant community recommends AraxisMerge for most people. In the question“What are the best folder/file compare/diff tools for either OSX, Linux or Windows?” AraxisMerge is ranked 15th while Kompare is ranked 19th. The most important reason people chose AraxisMerge is:
AraxisMerge has a feature which is very helpful especially for beginners. By clicking on different parts of a text file you can select all the parts to added in a final merged file. The comparison display also updates real-time as the merge happens.
Specs
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Pros
Pro Can create patch files
Kompare can create a patch file which lists the differences between two files. Patch files created this way are also compatible with the patch files created by the CLI diff utility.
Pro Supports comparing directories
Kompare can compare both files and directories.
Pro Configurable hotkeys
Because it's a KDE app, all the hotkeys are configurable
Pro Point and click merging
AraxisMerge has a feature which is very helpful especially for beginners. By clicking on different parts of a text file you can select all the parts to added in a final merged file. The comparison display also updates real-time as the merge happens.
Pro Directory comparisons
AraxisMerge supports comparing different directories with each other.
Pro Beautiful interface
Pro Three way merges
AraxisMerge supports three way merges.
Pro Update alternative files Word, PDF and even images
Pro Works great on large files
Cons
Con Commercial
AraxisMerge is not free:
$129 Standard and $269 Professional
But this is peanuts for a tool that you can use all day for the rest of your developer life.