| User Agent | Client Version | Operating System | OS Version | Language |
| Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.6b) Gecko/20031212 Firebird/0.7+ | 0.7+ | Windows | xp | en |
| Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.6a) Gecko/20031002 Firebird/0.7 | 0.7 | Windows | xp | en |
| Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.5) Gecko/20031007 Firebird/0.7 | 0.7 | Windows | xp | en |
| Mozilla/5.0 (Windows; U; Windows NT 5.1; de-DE; rv:1.5) Gecko/20031007 Firebird/0.7 | 0.7 | Windows | xp | de |
| Mozilla/5.0 (Windows; U; Win98; en-US; rv:1.5) Gecko/20031007 Firebird/0.7 | 0.7 | Windows | 98 | en |
| Mozilla/5.0 (Windows; U; Win95; en-US; rv:1.5) Gecko/20031007 Firebird/0.7 | 0.7 | Windows | 95 | en |
| Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.5) Gecko/20031026 Firebird/0.7 | 0.7 | Mac OS X | en | |
| Mozilla/5.0 (X11; U; SunOS sun4u; en-US; rv:1.5a) Gecko/20030729 Mozilla Firebird/0.6.1 | 0.6.1 | SunOS | en | |
| Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.5a) Gecko/20030728 Mozilla Firebird/0.6.1 | 0.6.1 | Linux | en | |
| Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.5b) Gecko/20030819 Mozilla Firebird/0.6.1 | 0.6.1 | Windows | xp | en |
| Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.5a) Gecko/20030728 Mozilla Firebird/0.6.1 | 0.6.1 | Windows | xp | en |
| Mozilla/5.0 (Windows; U; Windows NT 5.1; de-DE; rv:1.5a) Gecko/20030728 Mozilla Firebird/0.6.1 | 0.6.1 | Windows | xp | de |
| Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.5a) Gecko/20030728 Mozilla Firebird/0.6.1 | 0.6.1 | Windows | 2000 | en |
| Mozilla/5.0 (Windows; U; Windows NT 5.0; de-DE; rv:1.5a) Gecko/20030728 Mozilla Firebird/0.6.1 | 0.6.1 | Windows | 2000 | de |
| Mozilla/5.0 (Windows; U; Win98; de-DE; rv:1.5a) Gecko/20030728 Mozilla Firebird/0.6.1 | 0.6.1 | Windows | 98 | de |
| Mozilla/5.0 (X11; U; SunOS sun4u; en-US; rv:1.4b) Gecko/20030517 Mozilla Firebird/0.6 | 0.6 | SunOS | en | |
| Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4b) Gecko/20030630 Mozilla Firebird/0.6 | 0.6 | Linux | en | |
| Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4b) Gecko/20030607 Mozilla Firebird/0.6 | 0.6 | Linux | en | |
| Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4b) Gecko/20030516 Mozilla Firebird/0.6 | 0.6 | Linux | en | |
| Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4b) Gecko/20030505 Mozilla Firebird/0.6 | 0.6 | Linux | en |