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WinMerge is a Windows tool for visual difference display and merging, for both files and directories. It is highly useful for determining what has changed between file versions, and then merging those changes. WinMerge has Unicode support, Flexible syntax coloring editor, Visual SourceSafe integration, and Windows Shell integration. Regexp filtering for filenames and lines. Side-by-side line difference and highlights differences inside lines. A file map shows the overall file differences in a location pane. The user interface is translated into several languages.

Features

  • Visual differencing and merging of text files
  • Flexible editor with syntax highlighting, line numbers and word-wrap
  • Highlights differences inside lines
  • Difference pane shows current difference in two vertical panes
  • Location pane shows map of files compared
  • Moved lines detection
  • Compare folders in one level or recursive
  • Can show folder compare results flat or in a tree-style view
  • Regular Expression based file filters allow excluding and including items
  • Compares binary files in folder compare as well as text files
  • Shell Integration (supports 64-bit Windows versions)
  • Archive file support using 7-Zip
  • Fast compare using file sizes and dates
  • Creates patch files (Normal-, Context- and Unified formats)

Project Samples

File compare window is basically two files opened to editor Open dialog is only one of many ways to open files Folder compare shows all file and subfolders difference See the exact differences inside lines

Project Activity

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Categories

Version Control, File Managers, Diff Tools

License

GNU General Public License version 2.0 (GPLv2)

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WinMerge Web Site

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User Ratings

4.8 out of 5 stars
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User Reviews

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  • gouben Posted 2026-06-24
    5 out of 5 stars
    I use WinMerge to compare files and folders. Easy to understand and helps me find changes very quickly.
  • flancke Posted 2026-02-17
    5 out of 5 stars
    Great open source comparision tool!
  • mohdomar Edited 2025-12-24
    5 out of 5 stars
    Thank u it's really Good :)
  • lokeshgovindu Posted 2025-10-10
    5 out of 5 stars
    Excellent :-)
  • marcos-uy Posted 2025-03-20
    5 out of 5 stars
    Excellent, powerful and simple to use.
Read more reviews >

Additional Project Details

Operating Systems

Windows, Windows Server

Languages

Basque (Euskara), Brazilian Portuguese, Bulgarian, Catalan, Chinese (Simplified), Chinese (Traditional), Croatian, Czech, Danish, Dutch, English, French, Galician, German, Greek, Hungarian, Italian, Japanese, Korean, Norwegian, Persian, Polish, Portuguese, Romanian, Russian, Serbian, Slovak, Slovene, Spanish, Swedish, Turkish, Ukrainian

Intended Audience

Developers, System Administrators

User Interface

Win32 (MS Windows)

Programming Language

C++

Related Categories

C++ Version Control Software, C++ File Managers, C++ Diff Tools

Registered

2000-10-20
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