WinDiff!

Beyond Compare allows you to compare files and folders. By using simple, powerful commands you can focus on the differences you're interested in and ignore those you're not. You can then merge the changes, synchronize your files, and generate reports for your records.

WinMerge 2011 series is a fork of the original WinMerge application that compiles without ATL/MFC dependencies to enable zero-budget developers to build WinMerge from sources using Visual C++ Express editions.

Merge is an online merge and diff tool that allows you to share and save your documents.

Diff Checker is a free online diff tool that quickly and easily gives you the text differences between two files.

Easily compare and merge text files; compare doc, xls and pdf files; prepare comparison reports and printouts.

WinMerge JP is a fork of original WinMerge that incorporates many own features including 3-way compare, high DPI support and many more.

DiffPlug is a free text editor/differ and image viewer/differ. Purchasing a license allows you to diff other kinds of files such as Simulink.

GNU Diffutils is a package of several programs related to finding differences between files.

Compare Files Using ' Diff Doc' a visual file compare and folder compare utility that creates a detailed file diff. File comparison can optionally be done with the command line. Compare Word and Compare XLS files in addition to PDF, txt, rtf, htm

Workshare Compare is the leading document comparison software that lets you perform file comparison of two documents against multiple modified versions.

CompareMerge is a Mac OSX's software tool for file comparison and merging text-like files.It is useful for determining what has changed between versions, and then merging changes between versions.

AptDiff is a visual text / binary files comparison and merging utility for Windows. It is highly useful for web designers, software developers, and other professionals.AptDiff features a double-pane view that allows for side-by-side comparisons, with customizable color-coding indicating whether each line/byte is added, deleted, or changed. AptDiff can also export the side-by-side comparison to a nicely formatted HTML page for publishing on the web.AptDiff can be installed on FLASH or other portable drives. All user configurations are saved in the movable drive. You can carry AptDiff with you wherever your travels or business take you and run it on almost any computer. »