The latest development version of this page may be more current than this released 4.0.0 version.

Zephyr Project Documentation

Welcome to the Zephyr Project’s documentation for version 4.0.0.

Documentation for the latest (main) development branch of Zephyr can be found at https://docs.zephyrproject.org/

Use the version selection menu on the left to view documentation for a specific version of Zephyr.

For information about the changes and additions for past releases, please consult the published Releases documentation.

The Zephyr OS is provided under the Apache 2.0 license (as found in the LICENSE file in the project’s GitHub repo). The Zephyr OS also imports or reuses packages, scripts, and other files that use other licensing, as described in Licensing of Zephyr Project components.

Indices and Tables