KDiff3 (64-Bit) is a graphical text difference analyzer for up to 3 input files, provides character-by-character analysis and a text merge tool with integrated editor.
License: Open Source
KDiff3 is a powerful diff and merge tool with robust features suitable for complex projects, while Diffuse is a lightweight and user-friendly option ideal for simpler tasks. The choice between them depends on the complexity of the merging tasks and user experience preferences.