.. include:: /urls.rst .. _pureos_overview: Overview ======== PureOS is a fully `FOSS `_ `GNU/Linux `_ operating system (OS) based on `Debian`_. It is `endorsed as a fully-free OS`_ by the `Free Software Foundation`_. .. seealso:: * `GNU: List of strictly-free distros`_ * What does `GNU`_ mean? PureOS is not vastly different than other GNU/Linux distributions, except in the following ways: #. PureOS does *NOT* include any non-free proprietary software or firmware (aka *binary blobs*). #. PureOS is pre-configured with privacy and security in mind. PureOS along with additional technologies like PureBoot implement security-in-depth which aims to provide multiple layers of secure computing to protect both data at rest and data in transit. .. toctree:: :maxdepth: 1 Overview/FAQ Overview/Compatibility Overview/Privacy Overview/Security Overview/accessibility