| Microsoft | Internet Explorer | 1421 |
| Microsoft | Word | 150 |
| Microsoft | Exchange Server | 86 |
| Canonical | Ubuntu Linux | 3230 |
| Oracle | Database Server | 436 |
| Debian | Debian Linux | 5698 |
| Oracle | Mysql | 498 |
| Redhat | Enterprise Linux | 1028 |
| Redhat | Enterprise Linux Desktop | 1151 |
| Apple | Mac Os X | 2364 |
| Adobe | Acrobat Reader | 632 |
| Php | Php | 639 |
| Openbsd | Openbsd | 187 |
| Freebsd | Freebsd | 409 |
| Sun | Solaris | 869 |
| Sun | Sunos | 582 |
| Sgi | Irix | 184 |
| Hp | Hp-ux | 291 |
| Ibm | Aix | 325 |
| University Of Washington | Pine | 16 |
| Sco | Unixware | 89 |
| Isc | Bind | 106 |
| Sco | Openserver | 79 |
| Microsoft | Windows Nt | 259 |
| Cisco | Ios | 504 |
| Washington University | Wu-ftpd | 24 |
| Larry Wall | Perl | 50 |
| Apache | Http Server | 260 |
| Linux | Linux Kernel | 2853 |
| Netscape | Navigator | 52 |
| Qmail Project | Qmail | 5 |
| Microsoft | Windows 2000 | 534 |
| Suse | Suse Linux | 215 |
| Dan Bernstein | Qmail | 5 |
| Lsoft | Listserv | 10 |
| Novell | Netware | 72 |
| Paul Vixie | Vixie Cron | 11 |
| Microsoft | Windows 98 | 99 |
| Trend Micro | Interscan Viruswall | 22 |
| Microsoft | Outlook | 61 |
| Openssl | Openssl | 180 |
| Ibm | Lotus Notes | 73 |
| Midnight Commander | Midnight Commander | 22 |
| Aol | Instant Messenger | 31 |
| Ibm | Lotus Domino Server | 10 |
| Kde | Kde | 65 |
| Microsoft | Ie | 206 |
| Ibm | Websphere Application Server | 290 |
| Infopop | Ultimate Bulletin Board | 8 |
| Postgresql | Postgresql | 120 |
| Stalker | Communigate Pro | 11 |
| Microsoft | Windows 98se | 71 |
| An | An-httpd | 5 |
| Todd Miller | Sudo | 50 |
| Microsoft | Windows Explorer | 7 |
| University Of Cambridge | Exim | 57 |
| Symantec | Norton Antivirus | 64 |
| Lbl | Tcpdump | 189 |
| Ipswitch | Imail | 39 |
| Webmin | Webmin | 89 |
| Ncsa | Telnet | 3 |
| Ethereal Group | Ethereal | 109 |
| Delegate | Delegate | 9 |
| Broadcom | Inoculateit | 13 |
| Arpanet | Perlshop | 1 |
| F5 | Tmos | 7 |
| Ubuntu | Ubuntu Linux | 3230 |
| Trend Micro | Pc-cillin | 4 |
| Nortel | Contivity | 9 |
| Oracle | Application Server | 205 |
| Trend Micro | Officescan | 35 |
| Zonelabs | Zonealarm | 32 |
| Realnetworks | Realplayer | 172 |
| Id Software | Quake 3 Arena | 4 |
| Microsoft | Jet | 8 |
| Alexander Siegel | Golddig | 2 |
| Mozilla | Bugzilla | 149 |
| Netwin | Dmail | 6 |
| Bea | Weblogic Server | 216 |
| Hp | Openview Network Node Manager | 81 |
| Broadcom | Etrust Intrusion Detection | 16 |
| Sun | Java System Web Server | 35 |
| Conectiva | Linux | 1529 |
| Mozilla | Mozilla | 112 |
| Trustix | Secure Linux | 76 |
| Apache | Tomcat | 148 |
| Sun | Solaris Answerbook2 | 6 |
| Gnu | Mailman | 46 |
| Xpdf | Xpdf | 137 |
| Francisco Burzi | Php-nuke | 119 |
| Yabb | Yabb | 27 |
| Horde | Horde | 21 |
| Horde | Imp | 23 |
| Microsoft | Windows Media Player | 53 |
| Anaconda Partners | Foundation Directory | 2 |
| Microsoft | Windows Me | 66 |
| Cisco | Secure Access Control Server | 34 |
| Rob Flynn | Gaim | 28 |
| Ibm | Lotus Domino | 88 |
| Microsoft | Windows Xp | 762 |
