I am looking for a tool for Windows. It must allow comparing at least 3 text blocks. Any recommendations?

Update: 4 or more files at the same time is even better

  • Quite a few will handle 3 files. I know of none that will handle more. Is more than 3 a hard requirement, or are 3 sufficient?
    – Mawg
    Feb 13, 2020 at 8:43
  • @MawgsaysreinstateMonica I think 3+ or ideally unlimited is best.
    – user1093
    Feb 16, 2020 at 15:16
  • Your choice, but please state a value. 4 is 3+, so is 5.. Do you want unlimited, or is there some realistic number? Frankly, there are a few which handle 3 - and none which handle 4. Go ahead and demand more, if you want to; but expect to be disspaointed.
    – Mawg
    Feb 16, 2020 at 15:37
  • @MawgsaysreinstateMonica I know. That's why I said "at least 3" so I have at least something.
    – user1093
    Feb 16, 2020 at 19:39
  • 1
    I was just afraid that your "4 or more files at the same time is even better" would pout people off mentioning those that can only handle 3. But, nvm, you have some good responses
    – Mawg
    Feb 17, 2020 at 6:16

3 Answers 3


Your requirements, as stated, are minimal.

WinMerge will accomplish what you want. Specifically, it allows comparing three text files.

It is open-source, with the source code located here.

It is freeware and donations are accepted here.


Meld allows three-way comparison of files.

It is free and open source. There is an installer for Windows. Not that you need it, but others stumbling on this question might be interested in other platforms: It can be installed using the package manager on common Linux distributions; and though Mac isn't officially supported, there are some installers available for it anyway.


kDIFF3 will, as its name suggests, allow you to diff 3 files.

It is free, open source, well supported and :

  • compares or merges two or three text input files or directories,
  • shows the differences line by line and character by character (!),
  • provides an automatic merge-facility and an integrated editor for - comfortable solving of merge-conflicts,
  • supports Unicode, UTF-8 and other codecs, autodetection via byte-order-mark "BOM" supports KIO on KDE (allows accessing ftp, sftp, fish, smb etc.),
  • Printing of differences,
  • Manual alignment of lines,
  • Automatic merging of version control history ($Log$),
  • and has an intuitive graphical user interface.
  • Windows-Explorer integration Diff-Ext-for-KDiff3 - shell extension included in installer

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