Enlightenment DR 0.19.13 recently released, is a rich feature set, fast, modular and extensible window manager for X11 and Linux with a whole suite of libraries to help you create beautiful user interfaces with much less work. It provides an efficient yet breathtaking window manager based on the Enlightenment Foundation Libraries (EFL) along with other essential desktop components like a file manager, desktop icons and widgets. Enlightenment is comprised of both the Enlightenment window manager and Enlightenment Foundation Libraries (EFL), which provide additional desktop environment features such as a toolkit, object canvas, and abstracted objects.
Awesome is a highly configurable, next generation framework window manager for X. It is very fast, extensible and licensed under the GNU GPLv2 license. It is primarly targeted at power users, developers and any people dealing with every day computing tasks and who want to have fine-grained control on theirs graphical environment. Awesome has been designed as a framework window manager. It’s extremely fast, small, dynamic and heavily extensible using the Lua programming language.