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 i686; rv:64.0) Gecko/20100101 Firefox/64.0 IVW-Crawler-27642436
• Mozilla/5.0 (Windows NT 10.0; WOW64; rv:64.0) Gecko/20100101 Firefox/64.0 [ip:200.5.229.22]
• Mozilla/5.0 (Windows NT 10.0; WOW64; rv:64.0) Gecko/20100101 Firefox/64.0 [ip:200.0.234.204]
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_1; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; WOW64; rv:64.0) Gecko/20100101 Firefox/64.0 [ip:176.115.168.112]
• Mozilla/5.0 (X11; Linux i686; rv:64.0) Gecko/20100101 Firefox/64.0 IVW-Crawler-20303210
• Mozilla/5.0 (X11; Linux i686; rv:64.0) Gecko/20100101 Firefox/64.0 IVW-Crawler-12666201
• Mozilla/5.0 (Android 4.0.1; Mobile; rv:64.0) Gecko/64.0 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4172 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4872 ;Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (X11; Linux i686; rv:64.0) Gecko/20100101 Firefox/64.0 IVW-Crawler-25768867
• Mozilla/5.0 (Windows NT 6.1; Win64; IA64; rv:64.0) Gecko/20181206 Firefox/64.0; xs-iL9hdCNAFoc;rB-zGZ;
• Mozilla/5.0 (X11; Linux i686; rv:64.0) Gecko/20100101 Firefox/64.0 IVW-Crawler-27059002
• Mozilla/5.0 (Windows NT 10.0; 3096 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 6.2) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 3025 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4122 ;Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4034 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Android 8.1.0; Mobile; rv:64.0) Gecko/64.0 Firefox/64.0 [ip:37.162.102.69]
• Mozilla/5.0 (Windows NT 10.0; 4046 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4965 ;Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4689 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4466 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 3230 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 3035 ;Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 3233 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4648 ;Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4202 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4861 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4883 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4433 ;Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 3260 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 3236 ;Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4744 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4314 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 3835 ;Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 3468 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4640 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4140 ;Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4529 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 3978 ;Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 3250 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4348 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4892 ;Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 3082 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4301 ;Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4260 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4471 ;Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 3069 ;Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 3089 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4445 ;Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 3742 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4987 ;Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 3426 ;Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 3897 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 3536 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 3351 ;Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 3091 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 3075 ;Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 3099 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 3975 ;Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4608 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4220 ;Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 3643 ;Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4667 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 3292 ;Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4645 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 3841 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 3301 ;Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4328 ;Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4975 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 3419 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 3523 ;Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 3625 ;Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4475 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4959 ;Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4367 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4896 ;Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 3959 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4545 ;Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4404 ;Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4310 ;Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4793 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 3729 ;Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4115 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4384 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4389 ;Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4250 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4154 ;Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 3187 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 3762 ;Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4398 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4679 ;Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 3894 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4039 ;Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 3245 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4107 ;Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4568 ;Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 4776 ;Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0
• Mozilla/5.0 (Windows NT 10.0; 3997 ; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0