Raspberry Pi OS is the official operating system for Raspberry Pi computers. The project describes it as based on the Debian Linux distribution, with support for a large number of Debian packages, and the company states that its in-house software team updates it continuously. Users usually write the image to a microSD card with Raspberry Pi Imager, a tool that runs on Windows, macOS and Linux. The system is installed and run on the user's own Raspberry Pi hardware.
Raspberry Pi Ltd is registered in England, with its registered office in Cambridge, and is controlled by Raspberry Pi Holdings PLC, which has been listed on the London Stock Exchange since 2024. The company is therefore British and outside the EU and the EEA, but it is not owned by a non-European parent. Raspberry Pi says it aims to open-source as much code as possible; the website, however, does not state a licence covering the operating system as a whole. Because the system runs on the user's own hardware, data protection depends mainly on the chosen configuration.