Debian GNU/Linux's bug tracking system, which files details of bugs reported by users and developers. Each of these bugs are given a number, and are kept on file until they are marked as having been dealt with.
Free distribution of the original GNU operating system under name of Debian, maintained and updated by many users who volunteer their knowledge, time and effort. The Hurd is a set of servers running on top of the GNU Mach microkernel.
Official site. One of the most important distributions, uses only Free Software as defined by FSF. Descriptions (Social Contract, partners, donations), news, sources, packages, documents, support, developer corner.
A free distribution of the GNU/Linux operating system. It is maintained and updated through the work of many users who volunteer their time and effort.