Diff: Graphically shows the changes between two files. Includes intra-line highlighting and full support for editing.

Merge: Graphically shows the changes between 3 files. Allows automatic merging (when safe to do so) and full control over editing the resulting file.

Folder Diff: Performs a side-by-side comparison of 2 folders, showing which files are only present in one file or the other, as well as file pairs which are identical, equivalent or different.

Windows Explorer/Shell Integration: Right-click on any two files or folders in Windows Explorer to diff them immediately.

Configurable: Rulesets and options provide for customized appearance and behavior.

International: DiffMerge is a UNICODE-based application and can import files in a wide range of character encodings.

Cross-platform: Identical feature set on Windows, OS X, and Linux: