Meld is a visual diff and merge tool, targeted at developers. It allows users to compare two or three files or directories visually, color-coding the different lines.
Meld can be used for comparing files, directories, and version controlled repositories. It provides two- and three-way comparison of both files and directories, and supports many version control systems including Git, Mercurial, Bazaar, CVS and Subversion.
Meld is free and open-source software subject to the terms of the GNU General Public License (GPL-2.0-or-later).
Contents
Requirements
Requirements for Meld 3.22.2:
Python 3.4
GTK+ 3.20
GLib 2.36
PyGObject 3.20
GtkSourceView 3.20
pycairo
Port to GTK 4
As of April 2026, a port to GTK 4 is in development, with partial window state tracking for GTK 4 having been implemented since 2023.