Software development for 4Mb portable, using Z80 CPU and AA batteries
An operating system based on the best Windows NT design principles
AO RTOS is small real time OS based on Active Object concurrency model
A microkernel-based multiserver operating system written from scratch.
Indipendent distro uses inary package system. Sulin is roolling donkey
Message passing microkernel-based Operating System for ZX Spectrum +3e
RTOS for Secure, Safe and Real-Time Systems
An operating system written in RTL
A UNIX-like kernel for the i386 architecture
Reductively Architected Breviloquently Built Information Environment
Written in pure ASM and Exode with cloud computing in mind.
A multiplatform, DOS-like operating system
64-BIt Operating System with Compiler
CMAKE build enviroment for LPC2000 and LPC17xx Cortex MCUs
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
Custom firmware and IDE for the VEX Cortex Microcontroller
Simple, Fast, Advanced... ZintoriOS. Made in Wellington, New Zealand
Crosos is a SubLinux Distribution