RTEMS stands for Real-Time Operating System for Multiprocessor Systems. It is a deterministic operating system that is targeted towards deeply embedded systems and supports a wide variety of open API and interface standards and many host platforms and target architectures. The development of RTEMS is guided by a steering committee of the RTEMS project. The RTEMS development effort uses an open development environment in which all users collaborate to improve RTEMS. The RTEMS cross development toolset is based on free GNU tools and the open source C Library newlib.