LXDE is a free and open source desktop environment for Unix and other POSIX compliant platforms, such as Linux or BSD. The name LXDE stands for "Lightweight X11 Desktop Environment".
LXDE is designed to work well with computers on the low end of the performance spectrum such as the new generation netbooks and other small computers. LXDE is energy efficient and fast compared to other desktops. LXDE can be built on top of various Linux distributions such as Ubuntu or Debian.