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WinMerge is an Open Source differencing and merging tool for Windows. WinMerge can compare both folders and files, presenting differences in a visual text format that is easy to understand and handle.

PrestoSoft award-winning products include ExamDiff Pro, a visual tool for text and binary file and directory comparison, and FtpVC, a serverless version control system.

Diff Checker is a free online diff tool that gives you the text differences between two blocks of text.

Powerful file compare and folders synchronization utilities: Synchronize It!, Compare It!

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DiffNow lets you compare text files, documents, binary files, and archives up to 2048KB in size. You can either upload the files you wish to compare or enter their URLs. Results are returned as an interactive HTML report.

UltraEdit text editor, the world

Adobe software and services revolutionize how the world engages with ideas and information — anytime, anywhere, and through any medium. Learn more.

Use to compare one file to another. Will show you a visual representation of the file and highlight the differences.

The Microsoft Support home page is your support portal for Microsoft products. Download updates and find top issues, error messages, and troubleshooting tips for Windows XP, Windows Vista, Windows 7, Office 2010, the 2007 Microsoft Office system, and...

Easily spot the differences in text and image files. Review changes in seconds with the world

SourceForge.net. Fast, secure and free downloads from the largest Open Source applications and software directory