A BSD-based OS project that aims to provide an experience with MacOS
Real-Time Event Frameworks based on active objects & state machines
Software development for 4Mb portable, using Z80 CPU and AA batteries
A microkernel-based multiserver operating system written from scratch.
Latest Android builds from PixelBoot.
Tiny Kernel is a work in progress Operating System kernel.
Free real-time operating system designed for microcontrollers
Open-source RTOS and Embedded Systems Toolkit for C++ and C
A Debug style tool for OS Free systems
Run Linux on Windows or other OSes, natively.
LinuxTLE (Revival)
Wayland/QtQuick based OS with incremental updates and bundles
Android, DOS, FirefoxOS, Linux, MacOS and Windows all in one..
C++ library for POSIX systems.
LinuxID is an easy console-service for distro identification and more!
SuperWikia: The Runtime/Realtime Environment for Codesmiths
Universal Operating System