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 5.1; rv:44.0) Gecko/20100101 Firefox/44.0 [ip:38.140.46.186]
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:44.0) Gecko/20100101 Firefox/44.0 [ip:193.189.100.196]
• Mozilla/5.0 (Windows NT 5.1; rv:44.0) Gecko/20100101 Firefox/44.0 [ip:185.220.101.164]
• Mozilla/5.0 (Windows NT 5.1; rv:44.0) Gecko/20100101 Firefox/44.0 [ip:209.51.181.162]
• Mozilla/5.0 (Windows NT 6.1; rv:44.0) Gecko/20100101 Firefox/44.0 [ip:209.170.125.226]
• Mozilla/5.0 (Windows NT 6.3; WOW64; rv:44.0) Gecko/20100101 Firefox/44.0 [ip:209.51.181.162]
• Mozilla/5.0 (Windows NT 10.0; WOW64; rv:44.0) Gecko/20100101 Firefox/44.0 [ip:209.51.181.162]
• Mozilla/5.0 (Windows NT 6.0) Gecko/20100101 Firefox/44.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_5) Gecko/20100101 Firefox/44.0
• Mozilla/5.0 (Windows NT 6.0; Win64; x64; rv:44.0) Gecko/20100101 Firefox/44.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 6_3_7; rv:44.0) Gecko/20100101 Firefox/44.0
• Mozilla/5.0 (Windows NT 10.0; rv:44.0) Gecko/20100101 Firefox/44.0.1
• Mozilla/5.0 (Macintosh; Intel Mac OS X 9_8_7; rv:44.0) Gecko/20100101 Firefox/44.0
• Mozilla/5.0 (Android 6.0; Mobile; rv:44.0) Gecko/44.0 Firefox/44.0
• Mozilla/5.0 (Android 9; Mobile; rv:44.0) Gecko/44.0 Firefox/44.0
• Mozilla/5.0 (X11; Linux; rv:44.0) Gecko/20100101 Firefox/44.0
• Mozilla/5.0 (Windows NT 6.1; rv:44.0) Gecko/20100101 Firefox/44.0 %5555555%
• Mozilla/5.0 (X11; Ubuntu; Linux armv7l; rv:44.0) Gecko/20100101 Firefox/44.0
• Mozilla/5.0 (Windows NT 10.0; Win64; x64) Gecko/ Firefox/44.0.2
• Mozilla/5.0 (Windows NT 10.0; Win64; x64) Gecko/20100101 Chrome/44.0.1.1 Safari/537.37
• Mozilla/5.0 (X11; Linux x86_64) Gecko/ Firefox/44.0.2
• Mozilla/5.0 (Windows NT 6.1; WOW64) Gecko/20100101 Firefox/44.0.2
• Mozilla/5.0 (Windows NT 10.0; Win64; x64) Gecko/20100101 Firefox/44.0.2
• Mozilla/5.0 (Windows NT 6.1; WOW64) Gecko/ Chrome/44.0.1.1 Safari/537.37
• Mozilla/5.0 (Windows NT 6.2; rv:44.0.1) Gecko/20100101 Firefox/44.0.1 anonymized by Abelssoft 1618558300
• Mozilla/5.0 (Windows NT 6.1; rv:44.0) Gecko/20100101 Firefox/44.0a1
• Mozilla/5.0 (Android 5.1; Tablet; rv:44.0) Gecko/44.0 Firefox/44.0
• Mozilla/5.0 (Android 4.1.2; Mobile; rv:44.0) Gecko/44.0 Firefox/44.0
• Mozilla/5.0 (Windows NT 6.0; WOW64; rv:44.0) Gecko/20100101 Firefox/44.0a1
• Mozilla/5.0 (Android 4.0.4; Tablet; rv:44.0) Gecko/44.0 Firefox/44.0
• Mozilla/5.0 (Android 4.0.4; Mobile; rv:44.0) Gecko/44.0 Firefox/44.0
• Mozilla/5.0 (Android 4.4.0; Mobile; rv:44.0) Gecko/44.0 Firefox/44.0
• Mozilla/5.0 (Android 4.1.2; Tablet; rv:44.0) Gecko/44.0 Firefox/44.0
• Mozilla/5.0 (Android 4.2.2; Mobile; rv:44.0) Gecko/44.0 Firefox/44.0
• Mozilla/5.0 (Android 4.4.4; Mobile; rv:44.0) Gecko/44.0 Firefox/44.0
• Mozilla/5.0 (X11; FreeBSD amd64; rv:44.0) Gecko/20100101 Firefox/44.0
• Mozilla/5.0 (Android 4.1.1; Mobile; rv:44.0) Gecko/44.0 Firefox/44.0
• Mozilla/5.0 (Android 5.0.2; Mobile; rv:44.0) Gecko/44.0 Firefox/44.0
• Mozilla/5.0 (Android 5.0.1; Mobile; rv:44.0) Gecko/44.0 Firefox/44.0
• Mozilla/5.0 (Windows NT 5.1; rv:44.0) Gecko/20100101 Firefox/44.0 [ip:216.66.43.131]
• Mozilla/5.0 (X11; Linux i686 on x86_64; rv:10.0) Gecko/20100101 Firefox/44.0
• Mozilla/5.0 (Windows NT 6.0; rv:44.0; .NET CLR 4.0.30319; ffco7) Gecko/20100101 Firefox/44.0
• Mozilla/5.0 (Android 4.4.2; Mobile; rv:44.0.2) Gecko/44.0.2 Firefox/44.0.2
• Mozilla/5.0 (Android 4.4.2; Mobile; rv:44.0) Gecko/44.0 Firefox/44.0
• Mozilla/5.0 (Android 5.0; Mobile; rv:44.0) Gecko/44.0 Firefox/44.0
• Mozilla/5.0 (Mobile; OPENC; rv:44.0) Gecko/44.0 Firefox/44.0
• Mozilla/5.0 (Android 4.4.4; Tablet; rv:44.0) Gecko/44.0 Firefox/44.0
• Mozilla/5.0 (Windows NT 10.0; rv:44.0) Gecko/20100101 Firefox/44.0 anonymized by Abelssoft 1930677744
• Mozilla/5.0 (Windows NT 5.1; rv:44.0) Gecko/20100101 Firefox/44.0,gzip(gfe)
• Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:44.0) Gecko/20100101 Firefox/44.0\x09Firefox Generic
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:44.0) Gecko/20100101 Firefox/44.0a1
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:44.0) Gecko/20100101 Firefox/44.0
• Mozilla/5.0 (Windows NT 6.2; Win64; x64; rv:44.0) Gecko/20100101 Firefox/44.0
• Mozilla/5.0 (Android 5.1.1; Tablet; rv:44.0) Gecko/44.0 Firefox/44.0
• Mozilla/5.0 (Android; Tablet; rv:44.0) Gecko/44.0 Firefox/44.0
• Mozilla/5.0 (Android 7.0; Mobile; rv:44.0) Gecko/44.0 Firefox/44.0
• Mozilla/5.0 (Windows NT 10.0; WOW64; rv:44.0) Gecko/20100101 Firefox/44.0a1
• Mozilla/5.0 (Mobile; rv:44.0) Gecko/44.0 Firefox/44.0
• Mozilla/5.0 (Android 4.2.1; Mobile; rv:44.0) Gecko/44.0 Firefox/44.0
• Mozilla/5.0 (Windows NT 5.2; rv:44.0) Gecko/20100101 Firefox/44.0
• Mozilla/5.0 (Windows NT 5.1; WOW64; rv:44.0) Gecko/20100101 Firefox/44.0
• Mozilla/5.0 (Windows NT 10.0; WOW64; rv:45.0) Gecko/20100101 Firefox/44.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:44.0) Gecko/20100101 Firefox/44.0
• Mozilla/5.0 (Windows NT 6.0; WOW64; rv:44.0) Gecko/20100101 Firefox/44.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:44.0) Gecko/20100101 Firefox/44.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:44.0) Gecko/20100101 Firefox/44.0
• Mozilla/5.0 (X11; Linux i686; rv:44.0) Gecko/20100101 Firefox/44.0
• Mozilla/5.0 (Android 4.4; Tablet; rv:44.0) Gecko/44.0 Firefox/44.0
• Mozilla/5.0 (Android 5.0; Tablet; rv:44.0) Gecko/44.0 Firefox/44.0
• Mozilla/5.0 (Android 4.3; Mobile; rv:44.0) Gecko/44.0 Firefox/44.0
• Mozilla/5.0 (Windows NT 6.3; WOW64; rv:44.0) Gecko/20100101 Firefox/44.0a1
• Mozilla/5.0 (Android; Mobile; rv:44.0) Gecko/44.0 Firefox/44.0
• Mozilla/5.0 (Windows NT 6.1; rv:16.0) Gecko/20100101 Firefox/44.0
• Mozilla/5.0 (Android 4.4.2; Tablet; rv:44.0.2) Gecko/44.0.2 Firefox/44.0.2
• Mozilla/5.0 (Android 4.4.2; Tablet; rv:44.0) Gecko/44.0 Firefox/44.0
• Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:44.0) Gecko/20100101 Firefox/44.0
• Mozilla/5.0 (Windows NT 5.2; WOW64; rv:44.0) Gecko/20100101 Firefox/44.0
• Mozilla/5.0 (Windows NT 6.2; rv:44.0) Gecko/20100101 Firefox/44.0
• Mozilla/5.0 (Android 6.0.1; Mobile; rv:44.0) Gecko/44.0 Firefox/44.0
• Mozilla/5.0 (Windows NT 10.0; rv:44.0) Gecko/20100101 Firefox/44.0
• Mozilla/5.0 (Windows NT 6.3; rv:44.0) Gecko/20100101 Firefox/44.0
• Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:22.0) Gecko/20100101 Firefox/44.0
• Mozilla/5.0 (Android 4.1.1; Tablet; rv:44.0) Gecko/44.0 Firefox/44.0
• Mozilla/5.0 (Windows NT 6.3; Win64; x64; rv:44.0) Gecko/20100101 Firefox/44.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:44.0) Gecko/20100101 Firefox/44.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:44.0) Gecko/20100101 Firefox/44.0
• Mozilla/5.0 (Android 4.2.2; Tablet; rv:44.0) Gecko/44.0 Firefox/44.0
• Mozilla/5.0 (Windows NT 6.0; rv:44.0) Gecko/20100101 Firefox/44.0
• Mozilla/5.0 (Windows NT 6.2; WOW64; rv:44.0) Gecko/20100101 Firefox/44.0
• Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:44.0) Gecko/20100101 Firefox/44.0
• Mozilla/5.0 (X11; Linux x86_64; rv:44.0) Gecko/20100101 Firefox/44.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:44.0) Gecko/20100101 Firefox/44.0
• Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:44.0) Gecko/20100101 Firefox/44.0
• Mozilla/5.0 (X11; Linux x86_64; rv:10.0) Gecko/20150101 Firefox/44.0 (Chrome)
• Mozilla/5.0 (Windows NT 6.3; WOW64; rv:44.0) Gecko/20100101 Firefox/44.0
• Mozilla/5.0 (Windows NT 10.0; WOW64; rv:44.0) Gecko/20100101 Firefox/44.0
• Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:44.0) Gecko/20100101 Firefox/44.0
• Mozilla/5.0 (Windows NT 6.1; rv:44.0) Gecko/20100101 Firefox/44.0
• Mozilla/5.0 (Windows NT 5.1; rv:44.0) Gecko/20100101 Firefox/44.0
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:44.0) Gecko/20100101 Firefox/44.0