| http://www.linux.org/ | The Linux Home Page at Online |
| http://www.redhat.com/ | Linux, Embedded Linux and Open Source Solutions |
| http://www.redhat.co.jp/ | RedHat Linux JAPAN |
| http://www.vinelinux.org/ | Vine Linux Home Page |
| http://www.turbolinux.co.jp/ | Turbo Linux JAPAN |
| http://www.laser5.co.jp/ | LASER5 Linux |
| http://www.fsf.org/ | GNU's Not Unix! - the GNU Project and the Free Software Foundation (FSF) |
| http://www.gnu.org/ | GNU's Not Unix! - the GNU Project and the Free Software Foundation (FSF) |
| http://www.rpm.org/ | www.rpm.org homepage - RPM Package Manager |
| http://www.apache.org/ | Welcome! - The Apache Software Foundation |
| http://perl.apache.org/ | The Apache/Perl Integration Project |
| http://www.apache.jp/ | JAPAN APACHE USERS GROUP |
| http://japache.infoscience.co.jp/ | The JAPACHE HTTP Server Project |
| http://www.samba.org/ | SAMBA Web Page |
| http://www.samba.gr.jp/ | SAMBA JP |
| http://www.squid-cache.org/ | Squid Web Proxy Cache |
| http://www.isc.org/ | Internet Software Consortium - BIND (DNS DHCP) |
| http://www.wu-ftpd.org/ | WU-FTPD Development Group |
| http://rsug.itd.umich.edu/software/ | netatalk - the AppleTalk Protocol Suite for Unix |
| http://www.eecis.udel.edu/~ntp/ | Time Synchronization Server - NTP |
| http://www.kernel.org/ | The Linux Kernel Archives |
| http://www.snort.org/ | Snort The Open Source Network Intrusion Detection System |