Compare software

KDiff3Kaleidoscope
Free

Free and open source under the GPL v2 or later.

 Paid

Paid app with a free trial.

Windows, macOS, Linux macOS
  • Compares and merges files and whole directories
  • Three-way merge for resolving version control conflicts
  • Compares text, images and folders
  • Three-way merge with commit context
  • Interface looks dated next to newer diff tools
  • Focused on text; no rich comparison of binary formats
  • A diff and merge tool, not a full Git client
  • Paid after the trial
Downloadable app Downloadable app
Open source Closed source
License: GPL-2.0-or-later License not stated
No account needed Not stated if an account is needed
Works offline Not stated if it works offline

Checked October 1, 2026

Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.