Zephyr (operating system)
Zephyr Project logo | |
| Developer | Linux Foundation, Wind River Systems |
|---|---|
| Written in | C |
| OS family | Real-time operating systems |
| Working state | Current |
| Source model | Open source |
| Initial release | 26 July 2016 |
| Latest release | 4.1.0 / 7 March 2025 |
| Repository | |
| Marketing target | Internet of things, Embedded Systems |
| Available in | English |
| Platforms | ARM (Cortex-M, Cortex-R, Cortex-A), ARC, MIPS, Nios II, RISC-V, Xtensa, SPARC, x86, x86-64 |
| Kernel type | Microkernel (pre-v1.6) Monolithic (v1.6+) |
| License | Apache 2.0 |
| Preceded by | Wind River Rocket |
| Official website | www |
Zephyr (/ˈzɛf ər/) is a small real-time operating system (RTOS) for connected, resource-constrained and embedded devices (with an emphasis on microcontrollers) supporting multiple architectures and released under the Apache License 2.0. Zephyr includes a kernel, and all components and libraries, device drivers, protocol stacks, file systems, and firmware updates, needed to develop full application software.
It is named after Zephyrus, the ancient Greek god of the west wind.