NuttX (real-time operating system) is a small, compact real-time operating software (RTOS). It focuses on standards compliance and a small footprint. NuttX is scalable from 8-bit to 32 bit microcontroller environments. The primary governing standards are Posix, ANSI standards. For functionality that is not available under these standards or that is not suitable for deeply embedded environments (such a fork ()).), additional standard APIs from Unix (and other common RTOS's such as VxWorks), are adopted. Apache NuttX is a project currently in Incubation at the Apache Software Foundation (ASF), which is sponsored by The Incubator. All accepted projects must be incubated until further review determines that infrastructure, communications, decision making, and decision making processes have stabilized in a way consistent with other successful ASF projects.