MIcroscopic Window Manager (MIWM) is a fast, small, minimalist, and extremely reliable window manager. It is designed to do the job very simply and unobtrusively, without constraining power users. It features optional auto-tiling, desktop cleanup, a user-defined root menu, optional previewing of hidden windows, variable numbers of virtual desktops, and configurable window behavior. It includes a simple, very effective memory management utility for leak detection.
A Meta Window Manager is a means to write window managers. The project aims to provide a modular code base for window manager developers, not to write yet another window manager. The idea is to help with policy experimentation, (less time spent reinventing the wheel with each new manager) simplify maintenance if/when projects are abandoned (one code base to learn for lots of managers), and encourage development of many managers with focused policy designs instead of a few managers that are hugely configurable.
Multi-Cursor Window Manager creates a desktop environment that allows simultaneous input from multiple users. Users can work concurrently on different applications or desktop items. Each user gets a uniquely-colored cursor. It works by time-slicing the single system cursor. The state of each user's multi-cursor is maintained and restored just before an XEvent is sent to the system. Up to seven simultaneous users are supported.
Musca is a simple window manager for X allowing both tiling and stacking modes. It is similar to ratpoison but more friendly to the mouse and using a simpler keyboard navigation. There are no built in status bars, panels, or window decorations save for thin window borders to indicate focus. Window navigation can be mouse click to focus or entirely keyboard driven. Window tiling is manual but simple, and there are no restrictions on how you divide up the screen. It uses dwm's dmenu utility for launching apps and running various built in commands not mapped to hot keys.