Apache: http://archive.apache.org/dist/httpd/
Mod_SSL: http://mirrors.isc.org/pub/mod_ssl/source/
PgSQL: http://www.postgresql.org/download/
PHP : http://www.php.net/downloads.php
Bugzilla: http://www.bugzilla.org/download/
7Zip : http://sourceforge.net/projects/p7zip/files/
gawk http://www.gnu.org/software/gawk/manual/html_node/index.html
sed http://www.gnu.org/software/sed/manual/html_node/index.html
bash http://www.gnu.org/software/bash/manual/html_node/index.html
Wireshark: http://www.wireshark.org/download.html
OpenBSD: http://openbsd.org.ar/pub/OpenBSD/
NetBSD: http://ftp.netbsd.org/pub/NetBSD/iso/
FreeBSD: http://www.freebsd.org/where.html
RHEL : http://rhel.ieesee.net/uingei/
KNOPPIX: http://knopper.net/knoppix-mirrors/index-en.html
Debian: http://www.debian.org/CD/http-ftp/#mirrors
Ubuntu: http://www.ubuntu.com/desktop/get-ubuntu/download
Linux Kernel: http://www.kernel.org/pub/linux/kernel/