Mutter (software)
| Mutter | |
|---|---|
| Developer | GNOME Project |
| Release | April 2011 |
| Stable release | 50.4 
/ 4 August 2026 |
| Written in | C |
| Operating system | Unix-like |
| Size | 40.2 kB (amd64 .deb package) |
| Type | |
| License | GPL-2.0-or-later |
| Website | mutter |
| Repository | gitlab |
Mutter is a display server and window manager for the Wayland protocol ("compositor"). It is the default window manager for GNOME.
Mutter was initially a compositing window manager designed and implemented for the X Window System, but then evolved to be a Wayland compositor. It became the default window manager in GNOME 3, replacing Metacity, which used GTK for rendering. The name "Mutter" is a combination of "Metacity" and "Clutter".