AwesomeWM

AwesomeWM is a highly configurable, next generation framework window manager for X. It is very fast, extensible, and licensed under the GNU GPLv2 license. AwesomeWM is designed for users who want a dynamic tiling window manager that can be extensively customized. It allows users to arrange windows in non-overlapping tiles automatically, improving screen real estate usage.

A key feature of AwesomeWM is its extensibility through Lua scripting. Users can modify its behavior, appearance, and add new functionalities by writing Lua code. This allows for deep personalization, from custom widgets and layouts to complex automation. The configuration is done via a text file, typically `rc.lua`, located in the user's home directory.

AwesomeWM supports multiple tiling layouts, including floating windows, and allows users to switch between them easily. It also features advanced features like tagging, which are virtual desktops that can hold windows, and an intelligent application menu for launching programs. Its lightweight nature makes it suitable for older hardware or for users who prioritize performance and resource efficiency. While it has a steeper learning curve than some other desktop environments, the flexibility and control it offers are highly valued by its user base.