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 (X11; Linux x86_64; rv:57.0.2) Gecko/20100101 Firefox/57.0.2
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:57.0.4) Gecko/20100101 Firefox/57.0.4
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_1; rv:57.0.4) Gecko/20100101 Firefox/57.0.4
• Mozilla/5.0 (Windows NT 10.0; WOW64; rv:57.0) Gecko/20100101 Firefox/57.0 [ip:178.236.164.210]
• Mozilla/5.0 (Android 4.0.1; Mobile; rv:57.0) Gecko/57.0 Firefox/57.0
• Mozilla/5.0 (Android 11; Mobile; rv:57.0) Gecko/57.0 Firefox/57.0
• Mozilla/5.0 (Windows NT 6.1; 266 ;rv:57.0) Gecko/20100101 Firefox/57.0
• Mozilla/5.0 (Windows NT 6.1; 465 ;rv:57.0) Gecko/20100101 Firefox/57.0
• Mozilla/5.0 (X11; Linux x86_64; rv:57.0) Gecko/20100101 Firefox/57.0 Build ID: 20171116103757
• Mozilla/5.0 (Windows NT 6.1; 457 ;rv:57.0) Gecko/20100101 Firefox/57.0
• Mozilla/5.0 (Windows NT 6.1; 174 ;rv:57.0) Gecko/20100101 Firefox/57.0
• Mozilla/5.0 (Windows NT 6.1; rv:57.0) Gecko/20100101 Firefox/57.0 anonymized by Abelssoft 1811190192
• Mozilla/5.0 (Windows NT 6.1; 523 ;rv:57.0) Gecko/20100101 Firefox/57.0
• Mozilla/5.0 (Windows NT 6.1; 44 ;rv:57.0) Gecko/20100101 Firefox/57.0
• Mozilla/5.0 (Windows NT 6.1; 816 ;rv:57.0) Gecko/20100101 Firefox/57.0
• Mozilla/5.0 (Windows NT 6.1; 156 ;rv:57.0) Gecko/20100101 Firefox/57.0
• Mozilla/5.0 (Windows NT 6.1; 838 ;rv:57.0) Gecko/20100101 Firefox/57.0
• Mozilla/5.0 (Windows NT 6.1; 796 ;rv:57.0) Gecko/20100101 Firefox/57.0
• Mozilla/5.0 (Windows NT 6.1; 676 ;rv:57.0) Gecko/20100101 Firefox/57.0
• Mozilla/5.0 (Windows NT 6.1; 214 ;rv:57.0) Gecko/20100101 Firefox/57.0
• Mozilla/5.0 (Windows NT 6.1; 352 ;rv:57.0) Gecko/20100101 Firefox/57.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 9.3; rv:45.0) Gecko/20100101 Firefox/57.0
• Mozilla/5.0 (masking-agent; rv:57.0) Gecko/20180101 Firefox/57.0
• Mozilla/5.0 (Windows NT 6.1; 405 ;rv:57.0) Gecko/20100101 Firefox/57.0
• Mozilla/5.0 (Windows NT 6.1; 627 ;rv:57.0) Gecko/20100101 Firefox/57.0
• Mozilla/5.0 (Windows NT 6.1; 746 ;rv:57.0) Gecko/20100101 Firefox/57.0
• Mozilla/5.0 (Windows NT 6.1; 128 ;rv:57.0) Gecko/20100101 Firefox/57.0
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:57.0.3) Gecko/20100101 Firefox/57.0.3
• Mozilla/5.0 (Windows NT 6.1; rv:57.0) Gecko/20100101 Firefox/57.0 Firefox
• Mozilla/5.0 (Windows NT 10.0; rv:57.0 ) Gecko/20100101 Firefox/57.0 anonymized by Abelssoft 1313529785
• Mozilla/5.0 (Windows NT 6.1; rv:57.0) Gecko/20100101 Firefox/57.0 anonymized by Abelssoft 1839722024
• Mozilla/5.0 (Windows NT 6.1; 578 ;rv:57.0) Gecko/20100101 Firefox/57.0
• Mozilla/5.0 (Windows NT 6.1; 102 ;rv:57.0) Gecko/20100101 Firefox/57.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 11_6_7; rv:57.0) Gecko/20100101 Firefox/57.0
• Mozilla/5.0 (Windows NT 6.2; Win64; x64; rv:57.0.2) Gecko/20100101 Firefox/57.0.2
• Mozilla/5.0 (Windows NT 10.0; WOW64; rv:57.0.1) Gecko/20100101 Firefox/57.0.1
• Mozilla/5.0 (Windows NT 6.3; Win64; x64; rv:57.0.3) Gecko/20100101 Firefox/57.0.3
• Mozilla/5.0 (Windows NT 6.2; rv:57.0.4) Gecko/20100101 Firefox/57.0.4
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:57.0) Gecko/20100101 Firefox/57.0\xEF\xBB\xBF
• Mozilla/5.0 (Windows NT 10.0; WOW64; Trident/7.0; Mozilla/5.0 (Windows NT 6.3; WOW64; rv:57.0) Gecko/20100101 Firefox/57.0; rv:11.0) like Gecko
• Mozilla/5.0 (Windows NT 6.1; rv:57.0.2) Gecko/20100101 Firefox/57.0.2
• Mozilla/5.0 (Windows NT 6.2; Win64; x64; rv:57.0.1) Gecko/20100101 Firefox/57.0.1
• Mozilla/5.0 (Windows NT 6.2; rv:57.0.2) Gecko/20100101 Firefox/57.0.2
• Mozilla/5.0 (Windows NT 6.3; Win64; x64; rv:57.0.1) Gecko/20100101 Firefox/57.0.1
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:57.0.1) Gecko/20100101 Firefox/57.0.1
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:55.0) Gecko/20100101 Firefox/57.0
• Mozilla/5.0 (Windows NT 10.0; rv:57.0.2) Gecko/20100101 Firefox/57.0.2
• Mozilla/5.0 (Windows NT 10.0; rv:57.0.1) Gecko/20100101 Firefox/57.0.1
• Mozilla/5.0 (Windows NT 6.3; rv:57.0.2) Gecko/20100101 Firefox/57.0.2
• Mozilla/5.0 (Windows NT 6.3; Win64; x64; rv:57.0.2) Gecko/20100101 Firefox/57.0.2
• Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:57.0.1) Gecko/20100101 Firefox/57.0.1
• Mozilla/5.0 (Android 9; Tablet; rv:57.0) Gecko/57.0 Firefox/57.0
• Mozilla/5.0 (Android 8.1.0; Mobile; rv:57.0.4) Gecko/57.0.4 Firefox/57.0.4
• Mozilla/5.0 (X11; Linux x86; rv:57.0) Gecko/20100101 Firefox/57.0
• Mozilla/5.0 (Wayland; Linux x86_64; rv:57.0) Gecko/20100101 Firefox/57.0
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:57.0) Gecko/20100101 Firefox/57.0 (Pale Moon)
• Mozilla/5.0 (Windows NT 10.0; rv:57.0) Gecko/20100101 Firefox/57.0 anonymized by Abelssoft 660759064
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:57.0) Gecko/20100101 Firefox/57.0 (ShopQa_RVK_DISABLE_3DS)
• Mozilla/5.0 (Windows NT 10.0; rv:57.0) Gecko/20100101 Firefox/57.0 ineTagenT
• Mozilla/5.0 (Android 8.0.0; Mobile; Moto Z (2); rv:57.0) Gecko/57.0 Firefox/57.0
• Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:57.0) Gecko/20100101 Firefox/57.0 [ip:146.241.4.238]
• Mozilla/5.0 (Windows NT 10.0; WOW64; rv:57.0) Gecko/20100101 Firefox/57.0 artena programmer
• Mozilla/5.0 (Windows NT 10.0; WOW64; rv:56.0) Gecko/20100101 Firefox/57.0 artena programmer
• Mozilla/5.0 (X11; OpenBSD amd64; rv:57.0) Gecko/20100101 Firefox/57.0
• Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:57.0) Gecko/20100101 Firefox/57.0 [ip:93.41.34.32]
• Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:57.0) Gecko/20100101 Firefox/57.0 [ip:146.241.11.28]
• Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:57.0) Gecko/20100101 Firefox/57.0 [ip:146.241.12.72]
• Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:57.0) Gecko/20100101 Firefox/57.0 [ip:146.241.26.144]
• Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:57.0) Gecko/20100101 Firefox/57.0 [ip:146.241.4.214]
• Mozilla/5.0 (X11; Debian; Linux i686; rv:57.0) Gecko/20100101 Firefox/57.0
• Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:57.0) Gecko/20100101 Firefox/57.0 [ip:146.241.11.24]
• Mozilla/5.0 (Windows NT 6.1; rv:57.0) Gecko/20100101 Firefox/57.0 anonymized by Abelssoft 1531063988
• Mozilla/5.0 (Windows NT 6.2; rv:57.0.4.0) Gecko/20100101 Firefox/57.0.4.0
• Mozilla/5.0 (Windows NT 10.0; rv:57.0) Gecko/20100101 Firefox/57.0 anonymized by Abelssoft 771256869
• Mozilla/5.0 (Windows NT 6.3; rv:57.0.4.0) Gecko/20100101 Firefox/57.0.4.0
• Mozilla/5.0 (Windows NT 6.3; Win64; x64; rv:57.0.1.0) Gecko/20100101 Firefox/57.0.1.0
• Mozilla/5.0 (Windows NT 6.2; Win64; x64; rv:57.0.3.0) Gecko/20100101 Firefox/57.0.3.0
• Mozilla/5.0 (Windows NT 10.0; WOW64; rv:57.0.1.0) Gecko/20100101 Firefox/57.0.1.0
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:57.0.1.0) Gecko/20100101 Firefox/57.0.1.0
• Mozilla/5.0 (Windows NT 6.2; WOW64; rv:57.0.4.0) Gecko/20100101 Firefox/57.0.4.0
• Mozilla/5.0 (Windows NT 6.3; rv:57.0.3.0) Gecko/20100101 Firefox/57.0.3.0
• Mozilla/5.0 (X11; Slackware; Linux x86_64; rv:53.0) Gecko/20100101 Firefox/57.0
• Mozilla/5.0 (Windows NT 6.2; Win64; x64; rv:57.0.1.0) Gecko/20100101 Firefox/57.0.1.0
• Mozilla/5.0 (Android 0.0; Mobile; rv:57.0) Gecko/57.0 Firefox/57.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_4; rv:57.0) Gecko/20100101 Firefox/57.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_3; rv:57.0) Gecko/20100101 Firefox/57.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6; rv:57.0) Gecko/20100101 Firefox/57.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_3; rv:57.0) Gecko/20100101 Firefox/57.0,gzip(gfe)
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv767.0) Gecko/20100101 Firefox/57.0
• Mozilla/5.0 (Android 9; Mobile; rv:57.0.1) Gecko/57.0.1 Firefox/57.0.1
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:57.0) Gecko/20100101 Firefox/57.0 Lightning/5.4
• Mozilla/5.0 (Windows NT 6.1; rv:57.0 ) Gecko/20100101 Firefox/57.0 anonymized by Abelssoft 89954317
• Mozilla/5.0 (Android 7.1.2; Tablet; rv:57.0) Gecko/57.0 Firefox/57.0
• Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:57.0;secssobrowser) Gecko/20100101 Firefox/57.0
• Mozilla/5.0 (Windows NT 10.0; rv:57.0) Gecko/20100101 Firefox/57.0 anonymized by Abelssoft 1408115027
• Mozilla/5.0 (Windows NT 6.2; rv:50.0) Gecko/20100101 Firefox/57.0
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:57.0) Gecko/20100101 Firefox/57.0 TO-Browser/TOB7.57.0.118_03
• Mozilla/5.0 (Windows NT 6.3) Gecko/20100101 Firefox/57.0 Lightning/5.8.1
• Mozilla/5.0 (Android 4.2.2; Tablet; rv:57.0.1) Gecko/57.0.1 Firefox/57.0.1
• Mozilla/5.0 (Windows; U; Windows NT 6.1; rv:57.0) Gecko/20100101 Firefox/57.0