mdepx (also known as MDX or Machdep X) is an operating system for embedded applications

• Real-time
• Priority-based time-sliced round-robin scheduling
• Fully preemptible, cooperative scheduling optional
• Tickless operation
• Static/Dynamic memory allocation
• Timed Mutexes, Semaphores
• Symmetric Multiprocessing (SMP)
• BSD libc included
• BSD math library (msun) included
• Flat address space