Zephyr (operating system)

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.

Zephyr
Zephyr Project logo
DeveloperLinux Foundation,
Wind River Systems
Written inC
OS familyReal-time operating systems
Working stateCurrent
Source modelOpen source
Initial release17 February 2016 (2016-02-17)
Latest release3.5.0 / 20 October 2023 (2023-10-20)
Repository
Marketing targetInternet of things, Embedded Systems
Available inEnglish
PlatformsARM (Cortex-M, Cortex-R, Cortex-A), ARC, MIPS, Nios II, RISC-V, Xtensa, SPARC, x86, x86-64
Kernel typeMicrokernel (pre-v1.6)
Monolithic (v1.6+)
LicenseApache 2.0
Preceded byWind River Rocket
Official websitewww.zephyrproject.org
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