| Microsoft | Internet Explorer | 1421 |
| Microsoft | Excel | 205 |
| Canonical | Ubuntu Linux | 3227 |
| Debian | Debian Linux | 5694 |
| Redhat | Enterprise Linux | 1019 |
| Redhat | Enterprise Linux Desktop | 1150 |
| Apple | Mac Os X | 2364 |
| Pcre | Pcre | 37 |
| Cisco | Adaptive Security Appliance Software | 194 |
| Ffmpeg | Ffmpeg | 402 |
| Fortinet | Fortios | 26 |
| Openbsd | Openbsd | 187 |
| Freebsd | Freebsd | 409 |
| Redhat | Linux | 1531 |
| Sun | Solaris | 869 |
| Sun | Sunos | 582 |
| Hp | Hp-ux | 291 |
| Ibm | Aix | 325 |
| Sco | Unixware | 89 |
| Netbsd | Netbsd | 170 |
| Sco | Openserver | 79 |
| Microsoft | Windows Nt | 259 |
| Cisco | Ios | 504 |
| Larry Wall | Perl | 50 |
| Slackware | Slackware Linux | 55 |
| Apache | Http Server | 260 |
| Linux | Linux Kernel | 2853 |
| Netscape | Navigator | 52 |
| Sun | Java | 224 |
| University Of Arizona | Webglimpse | 7 |
| Microsoft | Windows 2000 | 534 |
| Microsoft | Internet Information Services | 91 |
| Cisco | Pix Firewall Software | 32 |
| Suse | Suse Linux | 215 |
| Proftpd Project | Proftpd | 46 |
| Khaled Mardam-bey | Mirc | 14 |
| Ibm | Lotus Notes | 73 |
| Vmware | Workstation | 183 |
| Microsoft | Ie | 206 |
| Ibm | Websphere Application Server | 290 |
| Floosietek | Ftgate | 6 |
| Ihtml Merchant | Ihtml Merchant | 2 |
| Turbolinux | Turbolinux | 16 |
| Todd Miller | Sudo | 50 |
| Mandrakesoft | Mandrake Linux | 136 |
| Symantec | Pcanywhere | 18 |
| Ethereal Group | Ethereal | 109 |
| Delegate | Delegate | 9 |
| Hylafax | Hylafax | 12 |
| David Harris | Pegasus Mail | 7 |
| Ubuntu | Ubuntu Linux | 3228 |
| Cisco | Pix Firewall | 17 |
| Nullsoft | Winamp | 66 |
| Etl | Delegate | 9 |
| Qnx | Qnx | 3 |
| Cisco | Catos | 18 |
| Realnetworks | Realplayer | 172 |
| Openldap | Openldap | 59 |
| Alt-n | Mdaemon | 43 |
| Mozilla | Bugzilla | 149 |
| Bea | Weblogic Server | 216 |
| Macromedia | Jrun | 38 |
| Conectiva | Linux | 1531 |
| Mozilla | Mozilla | 112 |
| Alt-n | Worldclient | 7 |
| Trustix | Secure Linux | 76 |
| Apache | Tomcat | 148 |
| Gnu | Mailman | 46 |
| Xpdf | Xpdf | 137 |
| Francisco Burzi | Php-nuke | 119 |
| Lyris | List Manager | 8 |
| Yabb | Yabb | 27 |
| Horde | Imp | 23 |
| Cisco | Catalyst 3500 Xl | 2 |
| Pam Mysql | Pam Mysql | 2 |
| Daniel Stenberg | Curl | 94 |
| Cisco | Secure Access Control Server | 34 |
| Dcscripts | Dcforum | 6 |
| Ibm | Lotus Domino | 88 |
| Microsoft | Windows Xp | 762 |
| Ibm | Db2 Universal Database | 69 |
| Cisco | Catalyst 6000 | 4 |
| Cisco | Catalyst 4000 | 4 |
| Cisco | Catalyst 5000 | 4 |
| Fetchmail | Fetchmail | 25 |
| Mandrakesoft | Mandrake Linux Corporate Server | 57 |
| Lars Ellingsen | Guestserver | 2 |
| Easy Software Products | Cups | 101 |
| Apple | Quicktime | 249 |
| Cisco | Pix Firewall 515 | 12 |
| Cisco | Pix Firewall 520 | 12 |
| Cisco | Vpn 3030 Concentator | 10 |
| Cisco | Vpn 3080 Concentrator | 9 |
| Cisco | Vpn 3060 Concentrator | 9 |
| Cisco | Vpn 3015 Concentrator | 9 |
| Cisco | Vpn 3000 Concentrator Series Software | 27 |
| Acme Labs | Perlcal | 2 |
| Jelsoft | Vbulletin | 99 |
| Webcalendar | Webcalendar | 32 |
| Phpmyadmin | Phpmyadmin | 272 |
