SmartWindows.app - Auto arrange all your app windows, whether on one screen or many with a single click!
Mir - The purpose of Mir is to enable the development of user interfaces shells.
SANeForce - SAN Pharma Sales Force Automation
Wayland - Wayland is intended as a simpler replacement for X, easier to develop and maintain.
ReIcon - ReIcon is portable freeware that enables you to save and restore your desktop layout.
DirectFB - DirectFB is a web-based platform that provides you with complete access to a software library that you can use for the acceleration of graphics, handling the input devices, and others for your Linux operating systems.