Phosh
Phosh
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Phosh

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Phosh

Phosh (portmanteau of phone and shell) is a graphical user interface designed for mobile and touch-based devices initially developed by Purism. The project is maintained and developed by a diverse community, and is the default shell used on several mobile Linux operating systems including PureOS, Mobian and Fedora Phosh. It is also an option on postmarketOS, Manjaro, and openSUSE. Its components follow a six-week release cycle.[failed verification]

In August 2017, Purism, personal computing hardware vendors and developers of PureOS announced their intention to release a privacy-centric smartphone that ran a mobile-optimized version of their Linux-based operating system. With this announcement, Purism released mockups of Phosh that resembled a modified GNOME Shell. This eventually became known as the Librem 5.

In April 2018, Purism started to publicly release documentation that referenced Phosh with updated mockups, and hired GNOME UI/UX developer Tobias Bernard to directly contribute to the shell.

Despite the Librem 5 phone being delayed, Phosh received its first official release in September 2018, which was primarily focused on developer usage. The first official hardware for direct use with Phosh was shipped several months later in December when Purism shipped hardware devkits. In July 2020, the PinePhone was released with a version of postmarketOS that featured the Phosh interface.

Since August 2021, Phosh's source code repository (including issue tracking and merge request handling) has been hosted by the GNOME Foundation. To ease testing on their devices Purism maintains a separate repository that integrates some of the open upstream merge requests and provides packaging for PureOS.

In February 2025, the Phosh.mobi e.V. was founded, supporting the Phosh project in financial and legal matters.

The Phosh Overview screen is the primary method to interact with the shell. It contains the App Grid, which displays user applications that can be launched from icons. The App Grid is split into two sections. The top section is reserved for frequently-used applications, and is known as "Favorites". The bottom section is reserved for all other installed applications.

In addition, a functionality is included that allows users to type search terms to find specific applications. The Overview screen also contains the Activities view, which visualizes the currently-opened applications, and gives a method to dismiss them as well.

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