zephyr
The main repository of the Zephyr Project, an open source real-time operating system for small embedded and IoT devices. It supports many hardware architectures and includes Bluetooth and security features.
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Share on XLicense: Apache-2.0
Overview
Zephyr is an open source real-time operating system for resource-constrained devices, from simple sensors and wearables to smart watches and IoT wireless gateways. It is built around a small-footprint kernel and designed with security in mind. This is the main Git repository of the Zephyr Project, which holds the kernel, boards and documentation.
Key features
- Small-footprint kernel for constrained systems
- Supports ARM, Intel x86, ARC, Xtensa, RISC-V, SPARC and MIPS
- Large number of supported boards
- Bluetooth and Bluetooth LE support
- Community help through mailing lists and Discord
Best for
Embedded and IoT developers who need an RTOS that runs across many architectures and boards. Start with the Getting Started Guide in the project documentation.
- Upstream
- zephyrproject-rtos/zephyr
- Fork on GitHub
- Guo-astro/zephyr
- Upstream stars
- 17k
- Category
- Hardware, OS and embedded
- Language
- C
- License
- Apache-2.0
- Forked
- 2025-11-25
- Sync status
- In syncLast synced 2026-10-19
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