A cute and educational x86 OS
Just bring Linux for a better world
ext2/3/4 library for microcontrollers
Android, DOS, FirefoxOS, Linux, MacOS and Windows all in one..
A custom fork of the Linux kernel.
Nanux Kernel
Mayax is a 32-bit hobby OS with windows style GUI.
Firmware source code for MosChip's MCS8140 USB/IP network processor