Debian is known for strict adherence to the Unix and free software philosophies. Debian is also known for an abundance of options the current release includes over twenty-six thousand software packages for eleven computer architectures.
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Prominent features of Debian are the APT package management system, its strict policies regarding its packages and the quality of its releases. These practices afford easy upgrades between releases and easy automated installation and removal of packages. Debian uses an open development and testing process. It is developed by 1000+ volunteers from around the world and supported by donations through SPI, a non-profit umbrella organization for various free software projects.