Debian Unstable (also known by its codename “Sid”) is not strictly a release, but rather a rolling development version of the Debian distribution containing the latest packages that have been introduced into Debian. As with all Debian release names, Sid takes its name from a ToyStory character.

What is Sid Debian?

The code name for Debian’s development distribution is sid , aliased to unstable . Most of the development work that is done in Debian, is uploaded to this distribution.

Should I use Debian Sid?

Using Debian Sid is a good way to get a rolling-release Debian experience. You’ll generally have newer packages than Ubuntu, but with about the same level of system stability. No strategy is perfect, and it’s always possible for things to go wrong.