Zephyr Project website screenshot

Zephyr Project

The Zephyr Project is a Linux Foundation project that delivers a small, scalable, secure, and open-source real-time operating system (RTOS) for resource-constrained embedded devices. Zephyr supports 1000+ boards across ARM Cortex, RISC-V, ARC, x86, Xtensa, and other architectures, ships with a C kernel, device drivers, networking stacks (BLE, Wi-Fi, Thread, Matter), security subsystems, and is supported by a meta-tool (west), an SDK (sdk-ng), and a broad ecosystem of training partners and commercial silicon and module vendors.

3 APIs 0 Features
EmbeddedIoTLinux FoundationRTOSOpen SourceEdge

APIs

Zephyr RTOS Kernel API

The Zephyr kernel C API exposes scheduling, threading, synchronization, memory management, and timer services for real-time embedded applications. It is the foundation that devi...

Zephyr Device Driver API

The Zephyr device driver subsystem exposes a uniform device model across GPIO, I2C, SPI, UART, ADC, sensors, displays, networking, USB, Bluetooth, and many other peripheral clas...

Zephyr Networking API

The Zephyr networking stack exposes BSD-like sockets, TLS/DTLS, MQTT, CoAP, LWM2M, HTTP, WebSocket, gRPC, and connectivity layers including IPv4/IPv6, Wi-Fi, Thread, OpenThread,...

Pricing Plans

Zephyr Plans Pricing

3 plans

PLANS

Rate Limits

Zephyr Rate Limits

5 limits

RATE LIMITS

FinOps

Zephyr Finops

FINOPS

Semantic Vocabularies

Zephyr Context

18 classes · 0 properties

JSON-LD

Resources

🔗
LinkedIn
LinkedIn
🌐
Portal
Portal
🔗
Documentation
Documentation
🔗
APIReference
APIReference
🚀
GettingStarted
GettingStarted
👥
GitHubOrganization
GitHubOrganization
👥
GitHubRepository
GitHubRepository
📦
SDKs
SDKs
🔗
CLI
CLI
📰
Blog
Blog
📄
ReleaseNotes
ReleaseNotes
🎓
Training
Training
🔗
Events
Events
🔗
Compliance
Compliance
📜
TermsOfService
TermsOfService
📜
PrivacyPolicy
PrivacyPolicy
🔗
JSONLD
JSONLD
🔗
Resources
Resources
🔗
Resources
Resources

Sources

apis.yml Raw ↑
aid: zephyr
name: Zephyr Project
description: The Zephyr Project is a Linux Foundation project that delivers a small, scalable, secure, and open-source real-time
  operating system (RTOS) for resource-constrained embedded devices. Zephyr supports 1000+ boards across ARM Cortex, RISC-V,
  ARC, x86, Xtensa, and other architectures, ships with a C kernel, device drivers, networking stacks (BLE, Wi-Fi, Thread,
  Matter), security subsystems, and is supported by a meta-tool (west), an SDK (sdk-ng), and a broad ecosystem of training
  partners and commercial silicon and module vendors.
type: Index
position: Consumer
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
tags:
- Embedded
- IoT
- Linux Foundation
- RTOS
- Open Source
- Edge
created: '2026-03-16'
modified: '2026-05-03'
url: https://raw.githubusercontent.com/api-evangelist/zephyr/refs/heads/main/apis.yml
specificationVersion: '0.19'
apis:
- aid: zephyr:zephyr-kernel-api
  name: Zephyr RTOS Kernel API
  description: The Zephyr kernel C API exposes scheduling, threading, synchronization, memory management, and timer services
    for real-time embedded applications. It is the foundation that device drivers and application code build on.
  humanURL: https://docs.zephyrproject.org/latest/kernel/index.html
  tags:
  - RTOS
  - Embedded
  - Kernel
  properties:
  - type: Documentation
    url: https://docs.zephyrproject.org/latest/kernel/index.html
  - type: APIReference
    url: https://docs.zephyrproject.org/apidoc/latest/index.html
  - type: GettingStarted
    url: https://docs.zephyrproject.org/latest/develop/getting_started/index.html
  - type: GitHubRepository
    url: https://github.com/zephyrproject-rtos/zephyr
- aid: zephyr:zephyr-device-driver-api
  name: Zephyr Device Driver API
  description: The Zephyr device driver subsystem exposes a uniform device model across GPIO, I2C, SPI, UART, ADC, sensors,
    displays, networking, USB, Bluetooth, and many other peripheral classes, configured through Devicetree and Kconfig.
  humanURL: https://docs.zephyrproject.org/latest/build/dts/index.html
  tags:
  - Drivers
  - Devicetree
  - Embedded
  properties:
  - type: Documentation
    url: https://docs.zephyrproject.org/latest/hardware/index.html
  - type: APIReference
    url: https://docs.zephyrproject.org/apidoc/latest/group__io__interfaces.html
- aid: zephyr:zephyr-networking-api
  name: Zephyr Networking API
  description: The Zephyr networking stack exposes BSD-like sockets, TLS/DTLS, MQTT, CoAP, LWM2M, HTTP, WebSocket, gRPC, and
    connectivity layers including IPv4/IPv6, Wi-Fi, Thread, OpenThread, Matter, and BLE.
  humanURL: https://docs.zephyrproject.org/latest/connectivity/networking/index.html
  tags:
  - Networking
  - IoT
  - Connectivity
  properties:
  - type: Documentation
    url: https://docs.zephyrproject.org/latest/connectivity/networking/index.html
common:
- type: LinkedIn
  url: https://www.linkedin.com/company/the-zephyr-project
- type: Portal
  name: Zephyr Project
  url: https://www.zephyrproject.org/
- type: Documentation
  name: Zephyr Project Documentation
  url: https://docs.zephyrproject.org/latest/
- type: APIReference
  name: Zephyr API Reference
  url: https://docs.zephyrproject.org/apidoc/latest/index.html
- type: GettingStarted
  name: Zephyr Getting Started Guide
  url: https://docs.zephyrproject.org/latest/develop/getting_started/index.html
- type: GitHubOrganization
  name: Zephyr Project on GitHub
  url: https://github.com/zephyrproject-rtos
- type: GitHubRepository
  name: Zephyr Primary Git Repository
  url: https://github.com/zephyrproject-rtos/zephyr
- type: SDKs
  name: Zephyr SDK (sdk-ng)
  url: https://github.com/zephyrproject-rtos/sdk-ng
- type: CLI
  name: West - Zephyr's Meta-Tool
  url: https://github.com/zephyrproject-rtos/west
- type: Blog
  name: Zephyr Project Blog
  url: https://www.zephyrproject.org/blog/
- type: ReleaseNotes
  name: Zephyr Release Notes
  url: https://docs.zephyrproject.org/latest/releases/index.html
- type: Training
  name: Zephyr Training Partner Program
  url: https://www.zephyrproject.org/training-partner-program/
- type: Events
  name: Zephyr Events
  url: https://www.zephyrproject.org/events/
- type: Compliance
  name: Zephyr Security
  url: https://docs.zephyrproject.org/latest/security/index.html
- type: TermsOfService
  name: Linux Foundation Terms of Use
  url: https://www.linuxfoundation.org/terms
- type: PrivacyPolicy
  name: Linux Foundation Privacy Policy
  url: https://www.linuxfoundation.org/privacy-policy/
- type: JSONLD
  name: Zephyr JSON-LD Context
  url: json-ld/zephyr-context.jsonld
- type: Resources
  name: Zephyr Vocabulary
  url: vocabulary/zephyr-vocabulary.yml
- type: Resources
  name: Zephyr Build Capability
  url: capabilities/zephyr-build.yaml
maintainers:
- FN: Kin Lane
  email: info@apievangelist.com