Viewing version-controlled files. Meld integrates with many version control systems to let you review local changes and perform simple version control tasks.
Visual diff and merge tool. Meld helps you compare files, directories, and version controlled projects. It provides two- and three-way comparison of both files ...
Meld is a GUI program, designed for two-way AND three-way file comparisons. It can compare text files side by side, but also recurse through entire directories.