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.
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 2026-09-29
More in Hardware, OS and embedded
The original Apollo 11 Guidance Computer source code for the command and lunar modules, published for reading and historical study.
Forked 2026-08-31Last synced 2026-09-29Custom license (see repository)Hardware, OS and embeddedGitHub
A teaching operating system written in exactly 2000 lines of code so students can read all of it. It runs on QEMU and RISC-V boards and comes with course projects.
Forked 2026-08-20Last synced 2026-09-29Custom license (see repository)Hardware, OS and embeddedGitHub
A 100-day series of IoT and embedded projects using ESP32, ESP8266 and Raspberry Pi Pico with MicroPython. Each day covers one sensor or module with code, circuit diagram and explanation.
Forked 2026-08-17Last synced 2026-09-29No license declaredHardware, OS and embeddedGitHub
An open-source, low-cost 10.5 GHz phased array radar project with hardware designs, firmware and software. It targets researchers, drone developers and SDR hobbyists who want to experiment with radar.
Forked 2026-08-17Last synced 2026-09-29Custom license (see repository)Hardware, OS and embeddedGitHub