| Canonical | Ubuntu Linux | 3231 |
| Oracle | Database Server | 436 |
| Debian | Debian Linux | 5700 |
| Oracle | Mysql | 498 |
| Redhat | Enterprise Linux | 1023 |
| Redhat | Enterprise Linux Desktop | 1150 |
| Apple | Mac Os X | 2364 |
| Adobe | Acrobat Reader | 632 |
| Php | Php | 639 |
| Openbsd | Openbsd | 187 |
| Freebsd | Freebsd | 409 |
| Redhat | Linux | 1694 |
| Sgi | Irix | 184 |
| Ibm | Aix | 325 |
| Sco | Unixware | 89 |
| Sco | Openserver | 79 |
| Microsoft | Windows Nt | 259 |
| Cisco | Ios | 504 |
| Slackware | Slackware Linux | 55 |
| Linux | Linux Kernel | 2853 |
| Netscape | Navigator | 52 |
| Microsoft | Windows 2000 | 534 |
| Samba | Samba | 167 |
| Suse | Suse Linux | 215 |
| Xfree86 Project | X11r6 | 31 |
| Microsoft | Windows 98 | 99 |
| Ipswitch | Ws Ftp Server | 24 |
| Kde | Kde | 65 |
| Microsoft | Ie | 206 |
| Microsoft | Windows 98se | 71 |
| Novell | Groupwise | 74 |
| Mandrakesoft | Mandrake Linux | 136 |
| Broadcom | Inoculateit | 13 |
| Fore | Powerhub Software | 1 |
| Microsoft | Zero Administration Kit | 1 |
| Ubuntu | Ubuntu Linux | 3232 |
| Nullsoft | Winamp | 66 |
| Nortel | Contivity | 9 |
| Globalscape | Cuteftp | 7 |
| Microsoft | Proxy Server | 7 |
| Cisco | 7200 Router | 2 |
| Cisco | 7500 Router | 2 |
| Realnetworks | Realplayer | 172 |
| Mozilla | Bugzilla | 149 |
| Putty | Putty | 32 |
| Broadcom | Etrust Intrusion Detection | 16 |
| Conectiva | Linux | 1694 |
| Mozilla | Mozilla | 112 |
| Trustix | Secure Linux | 76 |
| Gnu | Mailman | 46 |
| Xpdf | Xpdf | 137 |
| Microsoft | Windows Me | 66 |
| Cisco | Secure Access Control Server | 34 |
| Rob Flynn | Gaim | 28 |
| Microsoft | Windows Xp | 762 |
| Mandrakesoft | Mandrake Linux Corporate Server | 57 |
| Easy Software Products | Cups | 101 |
| Apple | Quicktime | 249 |
| Microsoft | Isa Server | 21 |
| Vim Development Group | Vim | 34 |
| Phpmyadmin | Phpmyadmin | 272 |
| Hp | Virtualvault | 7 |
| Tetex | Tetex | 17 |
| Carnegie Mellon University | Cyrus Imap Server | 13 |
| Squirrelmail | Squirrelmail | 68 |
| Novell | Groupwise Webaccess | 8 |
| Gallery Project | Gallery | 74 |
| Namazu | Namazu | 8 |
| Yard Radius Project | Yard Radius | 4 |
| Yard Radius | Yard Radius | 4 |
| Cherokee | Cherokee Httpd | 8 |
| Gnu | A2ps | 5 |
| Gnu | Enscript | 5 |
| Squid | Squid | 125 |
| Openpkg | Openpkg | 29 |
| Enlightenment | Imlib | 9 |
| Realnetworks | Realone Player | 36 |
| Hosting Controller | Hosting Controller | 38 |
| Icewarp | Web Mail | 25 |
| Citadel | Ux | 3 |
| Youngzsoft | Cmailserver | 7 |
| Mtr | Mtr | 4 |
| Kerio | Kerio Mailserver | 23 |
| Scponly | Scponly | 5 |
| Kde | Konqueror | 37 |
| Apple | Mac Os X Server | 673 |
| Viewcvs | Viewcvs | 5 |
| Ximian | Evolution | 36 |
| Symantec Veritas | Backup Exec | 22 |
| Cyrus | Sasl | 5 |
| Roaring Penguin | Mimedefang | 4 |
| Gfi | Mailsecurity | 3 |
| Redhat | Linux Advanced Workstation | 68 |
| Gentoo | Linux | 1694 |
| Php Arena | Pafiledb | 21 |
| Apple | Quicktime Streaming Server | 16 |
| Kerio | Personal Firewall | 20 |
| Eset Software | Nod32 Antivirus | 38 |
| Mozilla | Thunderbird | 1379 |
| File | File | 31 |
