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 (Windows NT 10.0; Win64; x64; WOW64; rv:41.0) Gecko/20100101 Firefox/83.0 (x64 de) Herring/90.1.7150.51
• Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:83.0) Gecko/20100101 Firefox/83.0 [ip:151.19.118.89]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:83.0) Gecko/20100101 Firefox/83.0 [ip:85.116.150.26]
• Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:83.0) Gecko/20100101 Firefox/83.0 [ip:151.35.114.119]
• Mozilla/5.0 (X11; Linux x86_64; rv:83.5) Gecko/20100101 Firefox/83.0
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:83.0) Gecko/20100101 Firefox/83.0 [ip:151.25.15.233]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:83.0) Gecko/20100101 Firefox/83.0 [ip:193.207.160.29]
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:83.0) Gecko/20100101 Firefox/83.0 [ip:87.9.241.111]
• Mozilla/5.0 (X11; Linux x86_64; rv:83.0) Gecko/20100101 Firefox/83.0/qDwiuRvI-07
• Mozilla/5.0 (X11; Linux x86_64; rv:83.0) Gecko/20200101 Firefox/83.0
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:83.0) Gecko/20100101 Firefox/83.0 sibvaleo-developer
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:83.0) Gecko/20100101 Firefox/83.0 54432998345TDSE21
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:83.0) Gecko/20100101 Firefox/83.0 delta1
• Mozilla/5.0 (Windows NT 6.3; rv:83.0 ) Gecko/20100101 Firefox/83.0 anonymized by Abelssoft 1704153795
• Mozilla/5.0 (X11; Linux x86_64; rv:83.0) Gecko/20100101 Firefox/83.0,gzip(gfe)
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:83.0) Gecko/20100101 Firefox/83.0 NomadBlockDevEnv
• Mozilla/5.0 (Macintosh; Intel Mac OS X 11_1; rv:83.0) Gecko/20100101 Firefox/83.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_4; rv:83.0) Gecko/20100101 Firefox/83.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_3; rv:83.0) Gecko/20100101 Firefox/83.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_1; rv:83.0) Gecko/20100101 Firefox/83.0
• Mozilla/5.0 (Android 12; Mobile; rv:83.0) Gecko/83.0 Firefox/83.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 11_2_1; rv:83.0) Gecko/20100101 Firefox/83.0
• Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:88.0) Gecko/20100101 Firefox/83.0
• Mozilla/5.0 (Android 6.0; Mobile; rv:83.0) Gecko/20111216 Firefox/83.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_3; rv:83.0) Gecko/20100101 Firefox/83.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_2; rv:83.0) Gecko/20100101 Firefox/83.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 11_2_2; rv:83.0) Gecko/20100101 Firefox/83.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_5; rv:83.0) Gecko/20100101 Firefox/83.0
• Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:15.0) Gecko/20100101 Firefox/83.0.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_1; rv:83.0) Gecko/20100101 Firefox/83.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_3; rv:83.0) Gecko/20100101 Firefox/83.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6; rv:83.0) Gecko/20100101 Firefox/83.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_4; rv:83.0) Gecko/20100101 Firefox/83.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5; rv:83.0) Gecko/20100101 Firefox/83.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7; rv:83.0) Gecko/20100101 Firefox/83.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_1; rv:83.0) Gecko/20100101 Firefox/83.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 11_2; rv:83.0) Gecko/20100101 Firefox/83.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_2; rv:83.0) Gecko/20100101 Firefox/83.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_4; rv:83.0) Gecko/20100101 Firefox/83.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_5; rv:83.0) Gecko/20100101 Firefox/83.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6; rv:83.0) Gecko/20100101 Firefox/83.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 11_2_3; rv:83.0) Gecko/20100101 Firefox/83.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_6; rv:83.0) Gecko/20100101 Firefox/83.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_2; rv:83.0) Gecko/20100101 Firefox/83.0
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:76.0) Gecko/20100101 Firefox/83.0 SEB
• Mozilla/5.0 (X11; Linux x86_64; rv:83.0) Gecko/20100101 Firefox/83.0;BEMODTWXZ
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:83.0) Gecko/20100101 Firefox/83.0 TinEye/1.0 (via http://www.tineye.com/)
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:83.0;XeThanh;XeCLM) Gecko/20100101 Firefox/83.0
• Mozilla/5.0 (Windows NT 10.0; WOW64; rv:56.0) Gecko/20100101 Firefox/83.0
• Mozilla/5.0 (Windows NT 10.0; rv:83.0) Gecko/20100101 rCu9IKkr-20 Firefox/83.0
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:83.0) Gecko/20100101 Firefox/83.0 MSWIECEJNIZOKNA
• Mozilla/5.0 (Windows NT 6.2; rv:83.0 ) Gecko/20100101 Firefox/83.0 anonymized by Abelssoft 1142338795
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:83.0) Gecko/20100101 Firefox/83.0.2
• Mozilla/5.0 (Windows NT 10.0; rv:83.0) Gecko/20100101 Firefox/83.0,gzip(gfe)
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:83.0) Gecko/20100101 Firefox/83.0,gzip(gfe)
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:83.0;secssobrowser) Gecko/20100101 Firefox/83.0
• Mozilla/5.0 (Windows NT 6.1; WOW73; rv:83.0) Gecko/20100101 Firefox/83.0
• Mozilla/5.0 (Linux x86_64; rv:83.0) Gecko/20100101 Firefox/83.0
• Mozilla/5.0 (Android 8.0; Mobile; rv:83.0) Gecko/83.0 Firefox/83.0
• Mozilla/5.0 (X11; Linux x86_64; rv:57.0) Gecko/20100101 Firefox/83.0/biliskner Haikus are easy/But sometimes they don't make sense/Refrigerator
• Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.15; rv:83.0) Gecko/20100101 Firefox/83.0
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:83.0) Gecko/20100101 Firefox/83.0-bugbounty-starproject-1799ece730fa8876aa416ec8a4d2211d
• Mozilla/5.0 (Windows NT 10.0; WOW64; rv:77.0) Gecko/20100101 Firefox/83.0
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:83.0) Gecko/20100101 Firefox/83.0/aMFsVojmMhkhQNrZkA
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:83.0) Gecko/20100101 Firefox/83.0/lHLmlywYf6hXLfR
• Mozilla/5.0 (Windows; U; Windows NT 6.1; Win64; x64; de; rv:1.9.2.6) Gecko/20100625 Firefox/83.0 (x64 de) Anonymisiert durch AlMiSoft Browser-Anonymisierer 73228578
• Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:83.0) Gecko/20130331 Firefox/83.0
• Mozilla/5.0 (Windows NT 10.0; rv:83.0 ) Gecko/20100101 Firefox/83.0 anonymized by Abelssoft 209441869
• Mozilla/5.0 (Android 11; Tablet; rv:83.0) Gecko/83.0 Firefox/83.0
• Mozilla/5.0 (Windows NT 6.3; Win64; x64; rv:83.0; Tesseract/1.0) Gecko/20100101 Firefox/83.0
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv83.0) Gecko/20100101 Firefox/83.0
• Mozilla/5.0 (Windows NT 6.1; rv:83.0 ) Gecko/20100101 Firefox/83.0 anonymized by Abelssoft 1887795940
• Mozilla/5.0 (Windows NT 6.1; rv:83.0) Gecko/20100101 Firefox/83.0/1laB5WpH-43
• Mozilla/5.0 (Windows NT 6.1; WOW64) Gecko/20100101 Firefox/83.0
• Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:83.0) Gecko/20100101 PQcuj1f3-10 Firefox/83.0
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:83.0) Gecko/20151123 Firefox/83.0
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:83.0) Gecko/20100101 Firefox/83.0/8mqQaZuL-16
• Mozilla/5.0 (Windows NT 6.3; Win64; x64; rv:83.0) Gecko/20100101 FUtmWVWD-29 Firefox/83.0
• Mozilla/5.0 (Windows NT 6.1; rv:83.0; Tesseract/1.0) Gecko/20100101 Firefox/83.0
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:83.0) Gecko/20100101 wburqliX-56 Firefox/83.0
• Mozilla/5.0 (Windows NT 10.0; rv:83.0 ) Gecko/20100101 Firefox/83.0 anonymized by Abelssoft 29261132
• Mozilla/5.0 (Windows NT 6.1; rv:83.0) Gecko/20100101 Firefox/83.0/8mqNiKuL-99
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:83.0) Gecko/20100101 Firefox/83.0/8mqQhSuL-09
• Mozilla/5.0 (Mozilla/5.0 (Macintosh; Intel Mac OS X 11.0; rv:83.0) Gecko/20100101 Firefox/83.0
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:83.0) Gecko/20100101 xSgBzC2G-21 Firefox/83.0
• Mozilla/5.0 (Windows NT 6.2; rv:83.0 ) Gecko/20100101 Firefox/83.0 anonymized by Abelssoft 2051896001
• Mozilla/5.0 (Windows NT 6.2; rv:83.0 ) Gecko/20100101 Firefox/83.0 anonymized by Abelssoft 1634638976
• Mozilla/5.0 (Windows NT 6.2; rv:83.0 ) Gecko/20100101 Firefox/83.0 anonymized by Abelssoft 924636479
• Mozilla/5.0 (Windows NT 6.2; rv:83.0 ) Gecko/20100101 Firefox/83.0 anonymized by Abelssoft 1716604950
• Mozilla/5.0 (Windows NT 10.0; rv:83.0 ) Gecko/20100101 Firefox/83.0 anonymized by Abelssoft 758805714
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:83.0) Gecko/20100101 Firefox/83.0/8mqPtVuL-9
• Mozilla/5.0 (Android 11; Mobile; rv:68.0) Gecko/68.0 Firefox/83.0
• Mozilla/5.0 (Windows NT 10.0; rv:83.0 ) Gecko/20100101 Firefox/83.0 anonymized by Abelssoft 1284997953
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:83.0) Gecko/20100101 v3yeWner-28 Firefox/83.0
• Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:83.0) Gecko/20100101 Firefox/83.0,gzip(gfe)
• Mozilla/5.0 (Windows NT 6.3; Win64; x64; rv:83.0) Gecko/20100101 Firefox/83.0/Z5VjPhnx-37
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:83.0) Gecko/20100101 Firefox/83.0/PeKSQzmO-29
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:83.0) Gecko/20100101 Xx0t6fMd-6 Firefox/83.0
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:83.0) Gecko/20100101 PeKSQzmO-29 Firefox/83.0
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:83.0) Gecko/20100101 1cnhLAUj-59 Firefox/83.0