For more information, please visit the following pages:

• Firefox
• Mozilla Foundation
• Gecko

Latest user agents (if you are looking for complete list, download it here):

• Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.7.8) Gecko/20050511 Firefox/1.0.4
• Mozilla/5.0 (Windows; U; Win98; hu-HU; rv:1.7.12) Gecko/20050919 Firefox/1.0.7
• Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.10) Gecko/20051106 Firefox/1.0.6/(Bifr\xF6st)
• Mozilla/5.0 (Windows; U; Windows NT 5.1; sv-SE; rv:1.7.5) Gecko/20041108 Firefox/1.0
• Mozilla/5.0 (Linux x86_64; rv:1.0) Gecko/2003528 Firefox/1.0
• Mozilla/5.0 (PPC; rv:1.0) Gecko/2000516 Firefox/1.0
• Mozilla/5.0 (Windows NT 6.2; rv:1.0) Gecko/2015103 Firefox/1.0
• Mozilla/5.0 (Windows NT 6.2; rv:1.0) Gecko/20051129 Firefox/1.0
• Mozilla/5.0 (Windows NT 5.2; rv:1.0) Gecko/20011024 Firefox/1.0
• Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.7) Gecko/20050414 Firefox/1.0.3
• Mozilla/5.0 (Linux x86_64; rv:1.0) Gecko/2006530 Firefox/1.0
• Mozilla/5.0 (Windows; U; Windows NT 5.2; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0
• Mozilla/5.0 (Windows NT 6.2; rv:1.0) Gecko/20181230 Firefox/1.0
• Mozilla/5.0 (Linux i686; rv:1.0) Gecko/202041 Firefox/1.0
• Mozilla/5.0 (Linux i686; rv:1.0) Gecko/2008516 Firefox/1.0
• Mozilla/5.0 (X11; U; Linux i686; de-DE; rv:1.7.6) Gecko/20050306 Firefox/1.0.1 (Debian package 1.0.1-2)
• Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.8) Gecko/20050511 Firefox/1.0.4 SUSE/1.0.4-1.1
• Mozilla/5.0 (Windows; U; Windows NT 5.0; de-DE; rv:1.7.7) Gecko/20050414 Firefox/1.0.3
• Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.7.7) Gecko/20050420 Firefox/1.0.3
• Mozilla/5.0 (Windows; U; Win98; en-US; rv:1.7.13) Gecko/20060410 Firefox/1.0.8
• Mozilla/5.0 (X11; U; Linux i686; de-DE; rv:1.7.13) Gecko/20060411 Firefox/1.0.8 SUSE/1.0.8-0.2
• Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-GB; rv:1.7.10) Gecko/20050717 Firefox/1.0.6
• Mozilla/5.0 (X11; U; Linux i686; en-GB; rv:1.7.13) Gecko/20060418 Fedora/1.0.8-1.1.fc4 Firefox/1.0.8
• Mozilla/5.0 (Windows; U; Windows NT 5.1; sv-SE; rv:1.7.6) Gecko/20050318 Firefox/1.0.2
• Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.10) Gecko/20050715 Firefox/1.0.6 SUSE/1.0.6-16
• Mozilla/5.0 (Windows; U; Win98; de-DE; rv:1.7.7) Gecko/20050414 Firefox/1.0.3
• Mozilla/5.0 (Windows; U; Windows NT 5.1; ro-RO; rv:1.7.6) Gecko/20050318 Firefox/1.0.2
• Mozilla/5.0 (X11; U; Linux i686; fr; rv:1.7.10) Gecko/20050925 Firefox/1.0.4 (Debian package 1.0.4-2sarge5)
• Mozilla/5.0 (Windows; U; Windows NT 5.0; en-GB; rv:1.7.6) Gecko/20050321 Firefox/1.0.2
• Mozilla/5.0 (X11; U; Linux i686; hu-HU; rv:1.7.12) Gecko/20051010 Firefox/1.0.7 (Ubuntu package 1.0.7)
• Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.8) Gecko/20050523 Firefox/1.0.4
• Mozilla/5.0 (Windows; U; Windows NT 5.1; it-IT; rv:1.7.6) Gecko/20050318 Firefox/1.0.2
• Mozilla/5.0 (Windows; U; Windows NT 5.1; nl-NL; rv:1.7.6) Gecko/20050318 Firefox/1.0.2
• Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.5) Gecko/20041218 Firefox/1.0
• Mozilla/5.0 (X11; U; Linux i686; de-DE; rv:1.7.6) Gecko/20050322 Firefox/1.0.1
• Mozilla/5.0 (X11; U; SunOS sun4u; en-US; rv:1.7.12) Gecko/20050927 Firefox/1.0.7
• Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.7.7) Gecko/20050503 Firefox/1.0.3 Madfox/0.3.2
• Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.8) Gecko/20050513 Firefox/1.0.4
• Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.10) Gecko/20050716 Firefox/1.0.6
• Mozilla/5.0 (X11; U; Linux i686; pl-PL; rv:1.7.10) Gecko/20050730 Firefox/1.0.6 (Debian package 1.0.6-2)
• Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7.6) Gecko/20050225 Firefox/1.0.1
• Mozilla/5.0 (X11; U; Linux ppc; da-DK; rv:1.7.12) Gecko/20051010 Firefox/1.0.7 (Ubuntu package 1.0.7)
• Mozilla/5.0 (Windows; U; Windows NT 5.2; de-DE; rv:1.7.6) Gecko/20050321 Firefox/1.0.2
• Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.6) Gecko/20050310 Firefox/1.0.1
• Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.7.7) Gecko/20060303 Firefox/1.0.3
• Mozilla/5.0 (Windows; U; Win98; fr-FR; rv:1.7.7) Gecko/20050414 Firefox/1.0.3
• Mozilla/5.0 (Windows; U; WinNT4.0; de-DE; rv:1.7.5) Gecko/20041108 Firefox/1.0
• Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.9) Gecko/20050711 Firefox/1.0.5 (ax)
• Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.5) Gecko/20050210 Firefox/1.0 (Debian package 1.0+dfsg.1-6)
• Mozilla/5.0 (Windows; U; Windows NT 5.0; de-DE; rv:1.6) Gecko/20040206 Firefox/1.0.1
• Mozilla/5.0 (Windows; U; Windows NT 5.1; de-DE; rv:1.7.6) Gecko/20050226 Firefox/1.0.1
• Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.6) Gecko/20050317 Firefox/1.0.2 (ax)
• Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.7) Gecko/20050421 Firefox/1.0.3 (Debian package 1.0.3-2)
• Mozilla/5.0 (X11; U; Linux i686; da-DK; rv:1.7.13) Gecko/20060411 Firefox/1.0.8 SUSE/1.0.8-0.2
• Mozilla/5.0 (Windows; U; WinNT4.0; de-DE; rv:1.7.6) Gecko/20050226 Firefox/1.0.1
• Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.5) Gecko/20041215 Firefox/1.0 Red Hat/1.0-12.EL4
• Mozilla/5.0 (X11; U; Linux i686; fr-FR; rv:1.7.10) Gecko/20050716 Firefox/1.0.6
• Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.7.8) Gecko/20050511 Firefox/1.0.4
• Mozilla/5.0 (X11; U; Linux x86_64; fr; rv:1.7.12) Gecko/20050922 Fedora/1.0.7-1.1.fc4 Firefox/1.0.7
• Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.7.7) Gecko/20050414 Firefox/1.0.3
• Mozilla/5.0 (Windows; U; Windows NT 5.1; fr-FR; rv:1.7.6) Gecko/20050318 Firefox/1.0.2
• Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.10) Gecko/20050918 Firefox/1.0.6
• Mozilla/5.0 (X11; U; Linux x86_64; nl-NL; rv:1.7.6) Gecko/20050318 Firefox/1.0.2
• Mozilla/5.0 (X11; U; Linux i686; de-DE; rv:1.7.5) Gecko/20041108 Firefox/1.0
• Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.7) Gecko/20050414 Firefox/1.0.3 (ax)
• Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.6) Gecko/20050317 Firefox/1.0.1
• Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.8) Gecko/20050517 Firefox/1.0.4 (Debian package 1.0.4-2)
• Mozilla/5.0 (Windows; U; Win98; es-ES; rv:1.7.7) Gecko/20050414 Firefox/1.0.3
• Mozilla/5.0 (X11; U; Linux i686; fr-FR; rv:1.7.8) Gecko/20050511 Firefox/1.0.4
• Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en; rv:1.7.12) Gecko/20050928 Firefox/1.0.7 Madfox/3.0
• Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.7.10) Gecko/20050724 Firefox/1.0.6
• Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.10) Gecko/20070116 Firefox/1.0.4 (Debian package 1.0.4-2sarge15)
• Mozilla/5.0 (X11; U; Linux i686; fr; rv:1.7.8) Gecko/20050524 Fedora/1.0.4-4 Firefox/1.0.4
• Mozilla/5.0 (Linux x86_64; rv:1.0) Gecko/2003615 Firefox/1.0
• Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.13) Gecko/20060413 Red Hat/1.0.8-1.4.1 Firefox/1.0.8
• Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041122 Firefox/1.0 IBrowse/2.5.4demo (Amiga; AmigaOS 3.1.4; Build 25.96 68K)
• Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.13) Gecko/20060411 Firefox/1.0.8 SUSE/1.0.8-0.2
• Mozilla/5.0 (Windows; U; Win 9x 4.90; en-US; rv:1.7.8) Gecko/20050511 Firefox/1.0.4
• Mozilla/5.0 (Windows; U; Win98; en-GB; rv:1.7.6) Gecko/20050321 Firefox/1.0.2
• Mozilla/5.0 (X11; Linux x86_64; rv:1.0) Gecko/20100101 Firefox/1.0
• Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.5) Gecko/20050814 Firefox/1.0
• Mozilla/5.0 (Windows; U; Windows NT 5.1; ru-RU; rv:1.7.8) Gecko/20050511 Firefox/1.0.4
• Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.7.12) Gecko/20051010 Firefox/1.0.7
• Mozilla/5.0 (X11; U; Linux i686; cs-CZ; rv:1.7.6) Gecko/20050226 Firefox/1.0.1
• Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.10) Gecko/20050719 Red Hat/1.0.6-1.4.1 Firefox/1.0.6
• Mozilla/5.0 (Windows; U; Win98; it-IT; rv:1.7.6) Gecko/20050226 Firefox/1.0.1
• Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-TW; rv:1.7.5) Gecko/20041119 Firefox/1.0
• Mozilla/5.0 (X11; U; Linux i686; fr; rv:1.7.12) Gecko/20050922 Fedora/1.0.7-1.1.fc4 Firefox/1.0.7
• Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.12) Gecko/20051010 Firefox/1.0.4 (Ubuntu package 1.0.7)
• Mozilla/5.0 (Windows; U; Win98; fr-FR; rv:1.7.6) Gecko/20050226 Firefox/1.0.1
• Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.7.6) Gecko/20050321 Firefox/1.0.2
• Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-CN; rv:1.7.12) Gecko/20051001 Firefox/1.0.7 Madfox/0.3.2u3
• Mozilla/5.0 (X11; U; Linux ppc; en-US; rv:1.7.12) Gecko/20051222 Firefox/1.0.7
• Mozilla/5.0 (Windows; U; Windows NT 5.0; de-DE; rv:1.7.6) Gecko/20050226 Firefox/1.0.1
• Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.10) Gecko/20050911 Firefox/1.0.6 (Debian package 1.0.6-5)
• Mozilla/5.0 (Windows; U; Windows NT 5.1; de-DE; rv:1.7.6) Gecko/20050223 Firefox/1.0.1
• Mozilla/5.0 (X11; U; Linux i686; de-AT; rv:1.7.5) Gecko/20041128 Firefox/1.0 (Debian package 1.0-4)
• Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.10) Gecko/20050815 Firefox/1.0.6
• Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.5) Gecko/20041128 Firefox/1.0 (Debian package 1.0-4)
• Mozilla/5.0 (Windows; U; Windows NT 5.1; fr; rv:1.8.0.10pre) Gecko/20050815 Firefox/1.0.6