Compare software

KDiff3 vs Kompare: catalog facts
KDiff3	Kompare
Free Free and open source under the GPL v2 or later.	Free Free and open source under the GPL 2.0 or later.
Windows, macOS, Linux	Linux
Compares and merges files and whole directories Three-way merge for resolving version control conflicts	Compares files and whole folders recursively Creates and applies patches
Interface looks dated next to newer diff tools Focused on text; no rich comparison of binary formats	Linux only Two-way comparison rather than three-way merge
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0-or-later	License: GPL-2.0-or-later
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

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