Raspberry Pi OS
Raspberry Pi OS is a Debian-based operating system for Raspberry Pi. Since 2015 it has been officially provided by the Raspberry Pi Foundation as the primary operating system for the family of Raspberry Pi single-board computers. The original Raspbian OS was created by Mike Thompson and Peter Green as an independent project. The initial build was completed in June 2012.
Previous Pi OS have been 32bit and based on Raspbian core, taking the name Raspbian. Since recent 64bit versions no longer use the Raspbian core, the name has been changed to Raspberry Pi OS for both 64bit and 32bit versions. As of 1 August 2020, the 64-bit version is a beta and is not suitable for general use
Raspberry Pi OS is highly optimized for the Raspberry Pi lines of compact Single Board Computers with ARM CPUs. Raspberry Pi OS uses a modified LXDE as its desktop environment with the Openbox stacking window manager plus a new theme and few other changes. The distribution is shipped with a copy of the algebra program Wolfram Mathematica and a version of Minecraft called Minecraft Pi as well as a lightweight version of Chromium as of the latest version.Reception
Jesse Smith from DistroWatch reviewed Raspberry Pi OS in 2015:
