WinMerge is an Open Source visual text file differencing and merging tool for Win32 platforms. It is highly useful for determing what has changed between project versions, and then merging changes between versions.


  • Visual differencing and merging of text files
  • Flexible editor with syntax highlighting, line numbers and word-wrap
  • Handles DOS, UNIX and MAC text file formats
  • Unicode support
  • Difference pane shows current difference in two vertical panes
  • Location pane shows map of files compared
  • Highlights differences inside lines in file compare
  • Regular Expression based file filters in directory compare allow excluding and including items
  • Moved lines detection in file compare
  • Creates patch files
  • Shell Integration (supports 64-bit Windows versions)
  • Rudimentary Visual SourceSafe and Rational ClearCase integration
  • Archive file support using 7-Zip
  • Plugin support
  • Localizable interface via resource DLL
  • Online manual and installed HTML Help manual

What's New


  • BugFix: Fixed crash when displaying file menu if jump list contains invalid title ( #45916)

File compare

  • Changed operation of displaying dialogs and context menus from status bar from double-click to single-click.

Table compare

  • BugFix: when TSV files were displayed in table mode with word wrap enabled, clicking on a character would not move the caret to that character's position

Folder compare

  • Fixed memory leak in folder comparison when PDF files were targeted for image comparison.

Options dialog

  • Improved translation regarding CPU cores (PR #1513)

Select Files or Folders dialog

  • Made it possible to specify Prediffer plugin


  • BugFix: Select Plugin dialog: Fixed that "Display all plugins" checkbox did not work