A BSD-based OS project that aims to provide an experience with MacOS
Scalable, optimized, secure RTOS for multiple hardware architectures
Rust Linux-compatible kernel
AO RTOS is small real time OS based on Active Object concurrency model
Real-Time Event Frameworks based on active objects & state machines
OS bootable from Linux,Windows and others partitions as auxiliary OS
Free cooperative operating system designed for microcontrollers
Written in pure ASM and Exode with cloud computing in mind.
Neptune is a kernel and operating system for x86 PCs.
Hard Real-Time OS compliant to the Osek/Vdx standard.
Mayax is a 32-bit hobby OS with windows style GUI.
A True Web Operating System
Simple AVR OS