AO RTOS is small real time OS based on Active Object concurrency model
The classic RPL programming language reimplemented and reimagined.
A hobby micro-kernel operating system
16 bit real mod minecraft clone running in bios
A python Linux Kernel Simulator
OnePlus Nord (Avicii) Builds of PSM-Kernel
amforth is an extendible interpreter on microcontrollers
Real-Time Event Frameworks based on active objects & state machines
Q1-kernel a hybrid kernel
Memory manager for Free Pascal
Jupyter kernel for Coq
Alternative operating system for x86 computers
Thread Scheduler with custom asynchronous messaging in VC++
freeRTOS for Arduino Uno, Goldilocks 1284p & Mega 2560
R kernel for Jupyter
Vampire OS is the alternative to Windows and macOS
A cute and educational x86 OS
A microkernel-based multiserver operating system written from scratch.