Alternatives to Kaleidoscope for Windows with any license

Meld

Open-source, Python-based visual diff and merge tool for comparing files and folders.

Free Open Source Mac Windows Linux BSD Python
Compare Source Code Folder Comparison One-click merging Syntax Highlighting ... Real Time Comparison Add a feature

346 Like
WinMerge

WinMerge is an open source differencing and merging tool for Windows. WinMerge can compare both folders and files, presenting differences in a visual text format that is...

Free Open Source Windows PortableApps.com Wine
Diff detection Folder Comparison Plugins Portable ... Directory sync Folder Comparison Add a feature

478 Like
Beyond Compare

Easily compare files and folders on FTP, local and cloud storage with source control integration and 3-way merge support.

Commercial $ $ $ Mac Windows Linux
Folder Comparison File-sync Folder sync Windows Explorer integration ... File-sync Folder sync Support for FTP Support for SFTP Version and Source control Add a feature

287 Like
KDiff3

KDiff3 is a file and directory diff and merge tool which - compares and merges two or three text input files or directories, - shows the differences line by line and...

Free Open Source Mac Windows Linux
3 way merge Side-by-Side comparison Text Wrapping Folder Comparison ... Version and Source control Add a feature

105 Like
Diffinity

A diff and merging tool with focus on accurate and easy to read source code diffs.

Free Windows
Folder Comparison Intuitive Interface Portable Readability ... Syntax Highlighting XAML Add a feature

19 Like
Compare

Comparison plugin for Notepad++ editor. Features Side-by-side visual differencing Comparison against SVN...

Free Open Source Windows Notepad++
Data Compare Side-by-Side comparison Add a feature

34 Like
WinMerge 2011

WinMerge 2011 series is a fork of the original WinMerge application that compiles without ATL/MFC dependencies.
- Discontinued
  WinMerge2011 is unavailable https://bitbucket.org/jtuc/winmerge2011 sometime ago was talked to merge the change from winmerge2011 back to winmerge, and the same will happen to "WinMerge JP" fork and the 3-way File Comparison feature at some point in the future.
Free Open Source Windows PortableApps.com Wine
Portable Folder Comparison Support for FTP Add a feature

31 Like
WinMerge JP

WinMerge JP is a fork of original WinMerge that incorporates many own features including 3-way compare, high DPI support and many more.

Free Open Source Windows
High-dpi support Portable Compare Source Code Add a feature

14 Like
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DiffMerge

DiffMerge is a graphical file comparison program for Windows, Mac OS X and Unix, published by SourceGear. * Integrates with Windows Explorer; adds a shortcut to the...
- Discontinued
  No releases since October 2013: latest version, 4.2.0, can be still downloaded from the official website.
Free Mac Windows Linux
Configurable Windows Explorer integration Merge Files Folder Comparison ... Side-by-Side comparison Support for Unicode Add a feature

38 Like
Diffuse

Diffuse is a small and simple text merge tool written in Python. With Diffuse, you can easily merge, edit, and review changes to your code. Diffuse is able to compare...

Free Open Source Mac Windows Linux
Side-by-Side comparison Add a feature

20 Like