| Description | Location |
|---|---|
| The Debian Linux distribution | debian |
| Debian GNU/Linux CD-ROM images | debian-cd |
| Red Hat, a provider of Linux distributions | redhat |
| CentOS, an Enterprise-class Linux Distribution "derived from sources freely provided to the public by a prominent North American Enterprise Linux vendor" | centos |
| Fedora, Red Hat’s "community project" Linux distribution | fedora |
| fedora.us, additional stuff for Red Hat Linux and Fedora prior to Fedora Core 3 | fedora.us |
| Mandrake, Publisher of the Mandriva Linux operating system (formerly Mandrakelinux) | mandrake |
| SUSE, Novell’s Linux distribution | suse |
| OpenSUSE, Novell’s "community project" Linux distribution | opensuse |
| The Comprehensive Perl Archive Network (CPAN) | CPAN |
| The Linux Documentation Project | LDP |
| The Free Software Foundation (The GNU Project) | gnu |
| The Ibiblio (formerly known as metalab) collection of Linux software | ibiblio |
| sourceware.org, an archive of various free software, mostly development tools | sourceware |
| oldlinux.org, a collection of historical Linux software | oldlinux |
| Ubuntu, a provider of Linux distributions | ubuntu |
| ubuntu-releases |
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