Debian-Installer is a system installer designed for the Debian Linux distribution. It originally appeared in the Debian release 3.1 (Sarge), released on June 6, 2005, although the first release of a Linux distribution that used it was Skolelinux (Debian-Edu) 1.0, released in June 2004. It is also one of two official installers available for Ubuntu, the other being called Ubiquity (itself based on parts of debian-installer) which was introduced in Ubuntu 6.06 (Dapper Drake). It makes use of cdebconf (a re-implementation of debconf in C) to perform configuration at install time.