ADIOS boot CD is a Linux live CD based on Red Hat Linux and a 2.6 kernel, with additional support for squashfs, unionfs, and SELinux. The CD can run from RAM, USB memory stick, or use FAT/EXT files for /var, or copy/install the CD to FAT/EXT files. The user can choose from KDE or IceWM. The user can start User Mode Linux (UML) virtual machines, each of which can start X. Each of the virtual machines can be networked via virtual ethernet switches and hubs. ADIOS requires at least 128MB RAM to run X11.
AfterStep is a Window Manager for X which started by emulating the NeXTSTEP look and feel, but which has been significantly altered according to the requests of various users. Many adepts will tell you that NeXTSTEP is not only the most visually pleasant interface, but also one of the most functional and intuitive out there. AfterStep aims to incorporate the advantages of the NeXTSTEP interface, and add additional useful features.
Anarchy is a window manager for the X Window System. It is implemented in less than 500 lines of CLOS oriented Scheme code. The implementation language is Gauche Scheme. Despite its small code size, it supports most functions expected of a basic window manager (move, resize, hide, minimize, maximize, list windows, root menu).
Athene is a desktop system for Linux that uses its own graphics drivers for high speed access to your graphics card. Because the Athene desktop and its applications have direct access to the graphics hardware, they have a significant speed advantage over conventional X applications. Athene is also backwards compatible with your existing X11 software. It features a highly responsive interface, scalable icons, translucency, alpha blending, Unicode support, and Windows compatibility.
BadWM is a minimalistic window manager for the X Window System. It features no window decorations except for a simple 1 pixel border, no icons, no menu, good keyboard control (including repositioning and vertical/horizontal/full maximization), is configurable through a config file, virtual desktops, small binary size, high usability, intelligent window placement, intellegent window resizing, snap to edge, snap to border, and multi-head support.
Blackbox is yet another addition to the list of window managers for X. It is written in C++, sharing no common code with any other window manager (even though the graphics implementation is similar to that of WindowMaker). It features small code size, a fast interface with simple menus, multiple workspaces, decorated windows, built-in graphics code to render solids, gradients, and bevels on the fly, and more.
Bluetile is a tiling window manager designed to integrate with the GNOME desktop environment. It provides both a traditional, stacking layout mode as well as tiling layouts where windows are arranged to use the entire screen without overlapping. Bluetile tries to make the tiling paradigm easily accessible to users coming from traditional window managers by drawing on known conventions and providing both mouse and keyboard access for all features.