The Best Open Source WinMerge AlternativesTop Diff Tools & File Comparison Tools like WinMerge

The best open source alternative to WinMerge is Meld. If that doesn't suit you, our users have ranked more than 50 alternatives to WinMerge and many of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to WinMerge are KDiff3, WinMerge 2011, Meld for OSX and WinMerge JP.

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WinMerge alternatives are mainly Diff Tools, but if you're looking for File Comparison Tools or Merge File Tools you can filter on that. Other popular filters include Linux, Mac, Mac + Free and Mac + Open Source. You can also filter by region, for example EU-based alternatives if you prefer software developed in the European Union. These are just examples - use the filter bar below to find more specific alternatives to WinMerge.
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Alternatives list

  1. Meld icon

    Meld

     422 likes

    Meld is an open-source, Python-based visual diff and merge tool that allows you to compare and edit files, supports syntax highlighting, and integrates with version control systems like CVS, Subversion, and Mercurial for dynamic diff updates. It works offline, is lightweight, portable, and ad-free.

    52 Meld alternatives

    Cost / License

    Application types

    Platforms

    • Windows
    • Linux
    • BSD
    • Python
    • GTK
    File comparison
     
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    4
    67
    Comments about Meld as an Alternative to WinMerge
    Guest
    Positive
    2

    compares three files. it can not only compare three directories but also merge them!

    Review by a new / low-activity user.
    redtrillix
    Positive
    0

    Its a very nice looking app and it is compatible with a lot of OS's and is FOSS.

    Guest
    Positive
    0

    Very good alternative to WinMerge on linux

    Review by a new / low-activity user.
    3 of 4 comments
    WinMerge Icon
    Meld icon

    • Most users think Meld is a great WinMerge alternative.

    • Meld is the most popular Windows & Linux alternative to WinMerge.

    • Meld is the most popular Open Source & free alternative to WinMerge.

    • Meld is Free and Open SourceWinMerge is also Free and Open Source
    • Meld is LightweightWinMerge is not according to our users
  2. KDiff3 icon

    KDiff3

     118 likes

    KDiff3 is a file and directory diff and merge tool.

    60 KDiff3 alternatives

    Cost / License

    • Free
    • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Flathub
    • KDE Plasma
    KDiff3 screenshot 1
     
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    3
    10
    Comments about KDiff3 as an Alternative to WinMerge
    Guest
    Positive
    0

    Lightweight, good 3 ways merge with 4 sub-windows. Really really visualization. I love it, it works from Linux, Windows to Mac.

    Review by a new / low-activity user.
    Guest
    Positive
    0

    solid cross platform utility

    Review by a new / low-activity user.
    Guest
    Negative
    0

    does not diff files (checksum)

    Review by a new / low-activity user.
    WinMerge Icon
    KDiff3 icon

    • Most users think KDiff3 is a great WinMerge alternative.

    • KDiff3 is Free and Open SourceWinMerge is also Free and Open Source
  4. WinMerge 2011 icon

    WinMerge 2011

     30 likes

    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.

    Cost / License

    Application types

    Platforms

    • Windows
    • PortableApps.com
    • Wine
    WinMerge 2011 screenshot 1
     
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    1
    16
    Comments about WinMerge 2011 as an Alternative to WinMerge
    samzqca
    Positive
    -1

    It's the same original winmerge

    Review by a new / low-activity user.
    WinMerge Icon
    WinMerge 2011 icon

    • Almost everyone thinks WinMerge 2011 is a great WinMerge alternative.

    • WinMerge 2011 is Free and Open SourceWinMerge is also Free and Open Source
  5. Meld for OSX icon

    Meld for OSX

     11 likes

    Meld is a visual diff and merge tool targeted at developers. Meld helps you compare files, directories, and version controlled projects. It provides two- and three-way comparison of both files and directories, and has support for many...

    46 Meld for OSX alternatives

    Cost / License

    Application types

    Platforms

    • Mac
    Meld for OSX screenshot 1
     
  7. Compare icon

    Compare

     37 likes

    Comparison plugin for Notepad++ editor.

    60 Compare alternatives

    Cost / License

    • Free
    • Open Source

    Application types

    Alerts

    • Discontinued

    Platforms

    • Windows
    • Notepad++
    Settings
     
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    1
    7
    Comments about Compare as an Alternative to WinMerge
    Guest
    Positive
    0

    Compares line by line for coding or config files.

    Review by a new / low-activity user.
    WinMerge Icon
    Compare icon

    • Almost everyone thinks Compare is a great WinMerge alternative.

    • Compare is Free and Open SourceWinMerge is also Free and Open Source
  10. mergely icon

    mergely

     15 likes

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

    31 mergely alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Online
    mergely screenshot 1
     
  11. Kompare icon

    Kompare

     12 likes

    Kompare is a graphical diff and merge tool targeting developers. It allows users to compare two different text files or two directories. It is part of KDE Applications (and formerly part of KDE Software Compilation) and therefore primarily used on Linux and other Unix-like...

    62 Kompare alternatives

    Cost / License

    Application types

    Platforms

    • Linux
    • KDE
    • Flathub
    Kompare screenshot 1
     
  12. Difftastic icon

    Difftastic

     3 likes

    Difftastic is a diff tool that compares files based on their syntax. It supports over 20 programming languages and when it works, it's fantastic.

    Cost / License

    • Free
    • Open Source (MIT)

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    Difftastic screenshot 1
     
12 of 22 WinMerge alternatives