Gobudgie is an operating system which is compatible to Android.
Written in pure ASM and Exode with cloud computing in mind.
Android, DOS, FirefoxOS, Linux, MacOS and Windows all in one..
An indie, hobby operating system
Small real time operating system for AVR and ARM microcontrollers
Neptune is a kernel and operating system for x86 PCs.
An open source OS written in assembly.
Embedded Real-Time Operating System (RTOS)
A new OS
Hard Real-Time OS compliant to the Osek/Vdx standard.
Mayax is a 32-bit hobby OS with windows style GUI.
Operating System in 512bytes.
A True Web Operating System
An operating system based upon the MOSA kernel.
A simple os written in ASM