.. only:: release Welcome to the Zephyr Project's documentation for version |version|. Documentation for the latest (main) development branch of Zephyr can be found at https://docs.zephyrproject.org/
.. only:: (development or daily) **Welcome to the Zephyr Project's documentation for the main tree under development** (version |version|).
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 releases, please consult the published :ref:`zephyr_release_notes` 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 :ref:`Zephyr_Licensing`.
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Architecture, features & licensing details
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Set up Zephyr, build & run a sample application
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How to submit patches and contribute to Zephyr
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Explore samples and demos for various boards
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Supported hardware and porting guides
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Security processes and guidelines
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List of supported boards and platforms
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OS Services and usage guides
.. toctree:: :maxdepth: 1 :caption: Contents introduction/index.rst develop/index.rst kernel/index.rst services/index.rst build/index.rst connectivity/index.rst hardware/index.rst contribute/index.rst project/index.rst security/index.rst safety/index.rst samples/index.rst boards/index.rst releases/index.rst