Raspbian is a free operating system based on Debian GNU / Linux, which is optimized for Raspberry Pi hardware (armhf processor architecture). Raspbian comes with more than 35,000 software packages or precompiled software, which is packaged in a graceful format for easy installation on Raspberry Pi. The first creation of the release was completed in June 2012, but it gained a sustained and active development and focused on improving the stability and performance of as many Debian packages as possible. Although Debian provides a release for the arm architecture, it is only compatible with the Raspberry Pi later version (ie ARMv7-A central processor and later, compared to Raspberry Pi’s ARMv6 central processor).
Raspbian 2017-07-05 released.