picom is described as 'Picom is a standalone compositor for Xorg, suitable for use with window managers that do not provide compositing. Picom is a fork of compton, which is a fork of xcompmgr-dana, which in turn is a fork of xcompmgr' and is an app in the os & utilities category. There are five alternatives to picom for Linux, FreeBSD, Qt and Wayland. The best picom alternative is Wayfire, which is both free and Open Source. Other great apps like picom are Compton, Xcompmgr, Gala and PaperDE.
Wayfire is a 3D Wayland compositor, inspired by Compiz and based on wlroots. It aims to create a customizable, extendable and lightweight environment without sacrificing its appearance.
Wayfire is the most popular Linux alternative to picom.
Wayfire is the most popular Open Source & free alternative to picom.
Xcompmgr is a simple composite manager capable of rendering drop shadows and primitive window transparency. Designed solely as a proof-of-concept, Xcompmgr is a lightweight alternative to Compiz and similar composite managers.
Gala is a window manager / compositing manager and an integral part of Pantheon, the desktop environment of elementary OS.
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Gala is a composing window manager, picom is a composer mainly intended for use with window managers that don't have composing built in.