Linux distribution based on Debian and composed mostly of free and open-source software.
Ubuntu is released every six months, with long-term support (LTS) releases every two years. As of 22 April 2021, the most recent long-term support release is 20.04 ("Focal Fossa"), which is supported until 2025 under public support and until 2030 as a paid option for companies and free for individuals who register. The latest standard release is 21.10 ("Impish Indri"), which is supported for nine months.