| Microsoft | Internet Explorer | 1421 |
| Microsoft | Exchange Server | 86 |
| Canonical | Ubuntu Linux | 3231 |
| Oracle | Database Server | 436 |
| Debian | Debian Linux | 5697 |
| Redhat | Enterprise Linux | 1023 |
| Redhat | Enterprise Linux Workstation | 1070 |
| Redhat | Enterprise Linux Desktop | 1150 |
| Redhat | Enterprise Linux Server | 1082 |
| Apple | Mac Os X | 2364 |
| Php | Php | 639 |
| Sun | Solaris | 869 |
| Sgi | Irix | 184 |
| Hp | Hp-ux | 291 |
| Ibm | Aix | 325 |
| Sco | Unixware | 89 |
| Sco | Openserver | 79 |
| Apache | Http Server | 260 |
| Linux | Linux Kernel | 2853 |
| Microsoft | Windows 2000 | 534 |
| Suse | Suse Linux | 215 |
| University Of Kansas | Lynx | 24 |
| Openssl | Openssl | 180 |
| Microsoft | Ie | 206 |
| Todd Miller | Sudo | 50 |
| Microsoft | Windows Explorer | 7 |
| Symantec | Norton Antivirus | 64 |
| Novell | Groupwise | 74 |
| Ethereal Group | Ethereal | 109 |
| Zope | Zope | 36 |
| Oracle | Application Server | 205 |
| Trend Micro | Officescan | 35 |
| Citrix | Metaframe | 10 |
| Mozilla | Bugzilla | 149 |
| Apache | Tomcat | 148 |
| Francisco Burzi | Php-nuke | 119 |
| Davide Libenzi | Xmail | 4 |
| Microsoft | Windows Media Player | 53 |
| Gnu | Cfengine | 14 |
| Microsoft | Windows Xp | 762 |
| Fetchmail | Fetchmail | 25 |
| Apple | Quicktime | 249 |
| Typsoft | Typsoft Ftp Server | 10 |
| Phpmyadmin | Phpmyadmin | 272 |
| Oracle | Oracle9i | 53 |
| Xloadimage | Xloadimage | 2 |
| Xli | Xli | 4 |
| Nathan Neulinger | Cgiwrap | 4 |
| Gallery Project | Gallery | 74 |
| Cerulean Studios | Trillian | 34 |
| Phpbb Group | Phpbb | 116 |
| Squid | Squid | 125 |
| Xoops | Xoops | 43 |
| Icewarp | Web Mail | 25 |
| Merak | Mail Server | 47 |
| University Of Washington | Uw-imap | 5 |
| Codeworx Technologies | Dcp-portal | 14 |
| Xerver | Xerver | 9 |
| Mantis | Mantis | 44 |
| Apple | Mac Os X Server | 673 |
| Novell | Netmail | 17 |
| Gfi | Mailsecurity | 3 |
| Kerio | Personal Firewall | 20 |
| Eset Software | Nod32 Antivirus | 38 |
| Microsoft | Windows 2003 Server | 427 |
| Apple | Safari | 1398 |
| Sun | One Directory Server | 6 |
| Netpbm | Netpbm | 12 |
| Clam Anti-virus | Clamav | 126 |
| Microsoft | Windows Server 2003 | 469 |
| Nuked-klan | Nuked-klan | 14 |
| Versatilebulletinboard | Versatilebulletinboard | 4 |
| Sourcefire | Snort | 17 |
| Kaspersky Lab | Kaspersky Anti-virus | 45 |
| Mod Auth Shadow | Mod Auth Shadow | 2 |
| Tiki | Tikiwiki Cms\/groupware | 67 |
| 4d | Webstar | 10 |
| Symantec | Antivirus Scan Engine | 10 |
| Xine | Xine-lib | 40 |
| Abisource | Community Abiword | 3 |
| Rarlab | Winrar | 14 |
| Yukihiro Matsumoto | Ruby | 100 |
| Prozilla | Prozilla Download Accelerator | 3 |
| Skype Technologies | Skype | 29 |
| Sophos | Sophos Anti-virus | 35 |
| Kde | Koffice | 10 |
| Mediawiki | Mediawiki | 330 |
| Devellion | Cubecart | 34 |
| S9y | Serendipity | 58 |
| Php Fusion | Php Fusion | 27 |
| Belchior Foundry | Vcard | 6 |
| Kerio | Serverfirewall | 3 |
| Broadcom | Etrust Antivirus | 16 |
| Gnome | Libvte4 | 1 |
| Mailenable | Mailenable Enterprise | 30 |
| Softwin | Bitdefender | 12 |
| Mailenable | Mailenable Professional | 34 |
| Gnome | Libzvt2 | 1 |
| Flatnuke | Flatnuke | 22 |
| Curl | Curl | 94 |
