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Icon of ExamDiff Pro, a powerful, intuitive, and easy to use visual side-by-side comparison tool for comparing, merging, and synchronizing text and binary files, and directories

Visual File And Directory Comparison Tool

Screenshot of ExamDiff Pro, a powerful, intuitive, and easy to use visual side-by-side comparison tool for comparing, merging, and synchronizing text and binary files, and directories

When you need to compare files or folders, no tool is more powerful and easy-to-use than ExamDiff Pro! Whether you want to synchronize two directories, compare two versions of your documents, or figure out what bytes got changed in a Windows DLL, ExamDiff Pro will get the job done.

ExamDiff Pro is a powerful yet intuitive and easy to use visual file and directory comparison tool for Windows 98/Me/NT/2000/XP/2003/Vista. It features unique functionality that distinguishes ExamDiff Pro from other comparison programs. If you've been frustrated with other comparison utilities, you will find that ExamDiff Pro offers a much more efficient and user-friendly way to compare files and folders.

For detailed information please refer to the online Help and ExamDiff Pro tutorials.

New feature! Current released version is 4.0 (build 4.0.2.8, May 5, 2008).


  • Compares text files, binary files, and directories.
  • Highlights differences down to the level of lines, words or characters.
  • Highlights document syntax.
  • Allows to add manual synchronization points to text file comparison.
  • Compares directly from Windows Explorer.
  • Allows editing files within file comparison panes.
  • Allows copying, renaming, and deleting files or directories.
  • Saves the file differences in a standard UNIX DIFF file or to a dynamic HTML web page.
  • Prints and print previews diff reports.
  • Easy navigation through the differences.
  • Advanced Search features.
  • Extensive command line interface.
  • Advanced Ignore options, for ignoring capitalization, white space, programming-language comments, and more.
  • Word wrapping.
  • Plug-in support.
  • Drag and drop support.
  • Can create directory snapshots for later comparison.
  • Includes full Unicode support.
  • Fully customizable.

Before submitting a bug report or a feature request, please consult the ExamDiff Pro FAQ and PrestoSoft Forums.

If your question is not answered, submit bug reports, new feature requests, and comments using the PrestoSoft contact form.

You can also vote for an existing suggestion or propose a new one at the ExamDiff Pro wish list.

If you find ExamDiff Pro useful, feel free to vote for it at CNet's Download.com.

You can subscribe to the latest ExamDiff Pro updates here.


Key Benefits

• Track changes in files and folders
• Quickly compare different versions of your documents
• Synchronize your directories
• Share difference reports with your colleagues
• Increase productivity while reducing errors
• Easy to use!

User Testimonials

Your product is one of the most useful utilities I own, and your personal service and responsiveness sets an industry standard.

Jesse Liberty, Liberty Associates
ExamDiff Pro should appeal to all levels of developers, from those just learning HTML to seasoned pros.

CNet Editors
The amount of time saved using ExamDiff is incalculable and the success I have had with my implementations can be credited, in part, to this wonderful tool.

Robert Dauman, Tech on Tech
This is the best Diff-ing tool I have come across... This is a must have for data geeks, testers, and developers.

P.B. Systems