- The FreeRTOS™ Kernel
- VxWorks
- RTLinux
- NuttX Real-Time Operating System
- OSEK (Offene Systeme und deren Schnittstellen für die Elektronik in Kraftfahrzeugen; English: "Open Systems and their Interfaces for the Electronics in Motor Vehicles")
- EB tresos operating system
- Vector OS - Microsar
- Prex
- RTEMS Real Time Operating System (RTOS)
- Sisteme de operare la emag
- Real-time OS for many-core processors
- ETAS RTA-OS
Bonus: