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; Intel Mac OS X 10.8; rv:24.0) Gecko/20100101 Firefox/24.0 IABrowser3683e498499
• Mozilla/5.0 (Windows NT 6.2; rv:24.0) Gecko/20190623 Firefox/24.0
• Mozilla/5.0 (Windows NT 5.1; rv:24.0) Gecko/20200508 Firefox/24.0
• Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:24.0) Gecko/20100101 Firefox/24.0 Chrome/80.0.3987.132 Safari/537.36
• Mozilla/5.0 (Linux i386; X11) Gecko/20102710 Firefox/24.0
• Mozilla/5.0 (Linux i386; X11) Gecko/20042301 Firefox/24.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10_6_5) Gecko/20041303 Firefox/24.0
• Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:24.0) Gecko/20100101 Firefox/24.0 As:
• Mozilla/5.0 (Macintosh; Intel Mac OS X 6_4_1; rv:24.0) Gecko/20100101 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0; WUID=f7eaecfb18c83062157ba39b96e11fa5; WTB=8094) Gecko/20100101 Firefox/24.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 6_2_5; rv:24.0) Gecko/20100101 Firefox/24.0
• Mozilla/5.0 (Windows; U; Windows NT 5.1; en; rv:1.9.2.3) Gecko/20100401 Firefox/24.0 Altmetribot
• Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20130621 Firefox/24.0
• Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:24.0) Gecko/20300301 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20130730 Firefox/24.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 11_4_3) Gecko/20020410 Firefox/24.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 11_6_1) Gecko/20121704 Firefox/24.0
• Mozilla/5.0 (Linux x86_64; X11) Gecko/20200806 Firefox/24.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 11_3_0) Gecko/20212907 Firefox/24.0
• Mozilla/5.0 (Windows NT 5.1; Win64; x64) Gecko/20141801 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20130727 Firefox/24.0
• Mozilla/5.0 (X11; Linux i686; rv:21.0) Gecko/20100101 Firefox/24.0
• Mozilla/5.0 (Linux i386; X11) Gecko/20191601 Firefox/24.0
• Mozilla/5.0 (Windows NT 5.1; rv:24.0) Gecko/20140401 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20141110 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.0; rv:24.0) Gecko/20100101 Firefox/24.0 AlexaToolbar/alxf-2.19
• Mozilla/5.0 (Linux x86_64; X11) Gecko/20062412 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Firefox/24.0 (for Sirius monitoring) 13/02/2017
• Mozilla/5.0 (masking-agent; rv:24.0) Gecko/20100101 Firefox/24.0
• Mozilla/5.0 (Windows NT 5.1; rv:24.0) Gecko/20130921 Firefox/24.0
• Mozilla/5.0 (Windows NT 5.1; rv:24.0) Gecko/20100101 Firefox/24.0 AlexaToolbar/alxf-2.19
• Mozilla/5.0 (Windows NT 5.1; rv:24.0) Gecko/20100101 (FB2B9910-9B0C-6927-04F6-81FA59D989C5) Firefox/24.0
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20141001 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20131119 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.1; rv:24.0) Gecko/20100101 Firefox/24.0 BLNGBAR
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0; WUID=1edf770412f74a51930ef97c120aab6b; WTB=6533) Gecko/20100101 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.1; rv:24.0) Gecko/20100101 (D5ED8F3D-89F5-6E6C-933F-9CCE8A7EFE10) Firefox/24.0
• Mozilla/5.0 (Windows NT 6.1; rv:24.0) Gecko/20100101 (6FC7856D-DF55-BB33-0658-8E5E40028EDA) Firefox/24.0
• Mozilla/5.0 (Windows NT 5.1; rv:24.0) Gecko/20131212 Firefox/24.0
• Mozilla/5.0 (Windows NT 5.1; rv:24.0) Gecko/20140518 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.1; rv:24.0) Gecko/20130921 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20131020 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 (7FAAED19-37C7-1F92-462F-C461217DCC74) Firefox/24.0
• Mozilla/5.0 (Windows NT 5.1; rv:24.0) Gecko/20100101 Firefox/24.0 BLNGBAR
• Mozilla/5.0 (Windows NT 5.1; rv:24.0) Gecko/20131030 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20131030 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20130616 Firefox/24.0
• Mozilla/5.0 (X11; Linux i686 on x86_64; rv:24.0; Neustar WPM) Gecko/20100101 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20130613 Firefox/24.0
• Mozilla/5.0 (Windows NT 5.1; rv:24.0) Gecko/20100101 Firefox/24.0 YB/7.7.1
• Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:24.0) Gecko/20130605 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.2; Win64; x64; rv:24.0) Gecko/20130521 Firefox/24.0
• Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:24.0) Gecko/20100101 Firefox/24.0
• Mozilla/5.0 (OS/2; Warp 4.5; rv:24.0) Gecko/20100101 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20130622 Firefox/24.0
• Mozilla/5.0 (X11; FC Linux i686; rv:24.0) Gecko/20100101 Firefox/24.0
• Mozilla/5.0 (X11; Linux i686; rv:24.0) Gecko/20100101 Firefox/24.0 DejaClick/2.5.0.11
• Mozilla/5.0 (Windows NT 6.2; rv:20.0) Gecko/20121202 Firefox/24.0
• Mozilla/5.0 (X11; FreeBSD amd64; Linux x86_64; rv:24.0) Gecko/20100101 Firefox/24.0
• Mozilla/5.0 (Windows NT 5.1; rv:24.0) Gecko/20100101 Firefox/24.0,gzip(gfe)
• Mozilla/5.0 (Windows NT 6.1; rv:24.0) Gecko/20130628 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.1; rv:24.0) Gecko/20130704 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20130609 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20130716 Firefox/24.0
• Mozilla/5.0 (Windows NT 5.1; rv:24.0) Gecko/20130701 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.1; rv:24.0) Gecko/20130701 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20130618 Firefox/24.0
• Mozilla/5.0 (Windows NT 5.1; rv:24.0) Gecko/20130518 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.0; WOW64; rv:24.0) Gecko/20130621 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.2; Win64; x64; rv:24.0) Gecko/20130622 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:24.0) Gecko/20130602 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20130712 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20130707 Firefox/24.0
• Mozilla/5.0 (Windows NT 5.1; rv:24.0) Gecko/20130702 Firefox/24.0
• Mozilla/5.0 (Windows NT 5.1; rv:24.0) Gecko/20130715 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20130708 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.1; rv:24.0) Gecko/20130711 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:24.0) Gecko/20130618 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20130606 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20130703 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20130620 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20130624 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20130622 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20130703 Firefox/24.0
• Mozilla/5.0 (Windows NT 5.1; rv:24.0) Gecko/20130606 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.2; Win64; x64; rv:24.0) Gecko/20130624 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20130626 Firefox/24.0
• Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20140205 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.2; rv:24.0) Gecko/20130704 Firefox/24.0
• Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20110328 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20130708 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:24.0) Gecko/20130622 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20130618 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.2; Win64; x64; rv:24.0) Gecko/20130623 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.2; rv:24.0) Gecko/20130524 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20130608 Firefox/24.0
• Mozilla/5.0 (Windows NT 5.1; rv:24.0) Gecko/20130707 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20130620 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20130704 Firefox/24.0
• Mozilla/5.0 (Windows NT 6.2; Win64; x64; rv:24.0) Gecko/20130608 Firefox/24.0