.. 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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Introducing the Zephyr Project: overview, architecture, features, and licensing
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Follow this guide to set up a Zephyr development environment on your system, and then build and run a sample application.
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As an open-source project, we welcome and encourage the community to submit patches directly to the project.
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A list of samples and demos that can run on a variety of boards supported by Zephyr
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Information about supported architectures, supported hardware and porting guides
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Requirements, processes, and developer guidelines for ensuring security is addressed within the Zephyr project.
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List of supported boards and platforms.
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OS Services and guides how to use them with Zephyr
.. 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 samples/index.rst boards/index.rst releases/index.rst