Android, DOS, FirefoxOS, Linux, MacOS and Windows all in one..
Sensa is not an operating system, is a work environment compatible with Android © 4.4.4, Firefox OS ©, Linux Ubuntu 12.12 ©, MacOS Classic 7 ©, MS -DOS © operating systems, and Microsoft Windows 8.1 ©; whose distribution is free, and with source code available under GNU GPL 2.0 license .
Xynth is a portable embedded windowing system, client/server interface between display hardware (mouse, keyboard, video displays) and the desktop environment that works on many hardware, including embedded devices (handhelds, set-top boxes, etc.). Move project source to github: https://github.com/alperakcan/xynth
GameboyZ is a gameboy emulator for the Sharp Zaurus.
P2P Instant Messenger Extension Client to most IM's for sharing content amongst your friends using torrents.