Meld (software)

Meld
Meld
	Meld 3.x.y performing a file comparison
Original authors	Stephen Kennedy, Kai Willadsen, Vincent Legoll
Developer	The GNOME Project
Release	August 8, 2002; 23 years ago
Stable release	3.24.0 / June 20, 2026; 41 days ago
Written in	Python, PyGTK/PyGObject
Operating system	Linux and Unix-like, macOS, Windows
Type	Diff viewer
License	GPL-2.0-or-later
Website	meldmerge.org,; gitlab.gnome.org/GNOME/meld/-/wikis/home
Repository	gitlab.gnome.org/GNOME/meld.git ;

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).

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^[update], a port to GTK 4 is in development,^[3] with partial window state tracking for GTK 4 having been implemented since 2023.^[4]