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 (Android 3.2.6; Mobile; rv:41.0) Gecko/41.0 Firefox/41.0
• Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:41.0) Gecko/20100101 Firefox/41.0 [ip:95.233.152.73]
• Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:41.0) Gecko/20100101 Firefox/41.0 [ip:79.22.224.63]
• Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:41.0) Gecko/20100101 Firefox/41.0 [ip:79.34.213.157]
• Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:41.0) Gecko/20100101 Firefox/41.0 [ip:79.49.32.112]
• Mozilla/5.0 (Windows NT 6.0; rv:41.0) Gecko/20100101 Firefox/41.0 DT-Browser/DTB7.41.0.21_04
• Mozilla/5.0 (Windows NT 5.1; de; rv:41.0) Gecko/20100101 Firefox/41.0
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:41.0) Gecko/20100101 Firefox/41.0 AlexaToolbar/pFRxfJlf-2.2
• Mozilla/5.0 (Android 4.4; Mobile; rv:68.11.0) Gecko/41.0 Firefox/41.0
• Mozilla/5.0 (Windows NT 10.0%3B WOW64; rv [Other]: 41.0) Gecko/20100101 Firefox/41.0
• Mozilla/5.0 (X11; Linux i686; rv:41.0) Gecko/20100101 Firefox/41.0 conkeror/1.0.4
• Mozilla/5.0 (Windows NT 6.1; WOW64) Gecko/ Firefox/41.0.2
• Mozilla/5.0 (Windows NT 10.0; Win64; x64) Gecko/20100101 Chrome/41.0.1.1 Safari/537.37
• Mozilla/5.0 (Windows NT 6.1; WOW64) Gecko/ Chrome/41.0.1.1 Safari/537.37
• Mozilla/5.0 (X11; Linux x86_64) Gecko/20100101 Firefox/41.0.2
• Mozilla/5.0 (Android 4.4.2; Mobile; rv:52.0) Gecko/52.0 Firefox/41.0
• Mozilla/5.0 (X11; Ubuntu; Linux armv7l; rv:41.0) Gecko/20100101 Firefox/41.0
• Mozilla/5.0 (Android 4.1.2; Mobile; rv:41.0) Gecko/41.0 Firefox/41.0
• Mozilla/5.0 (Windows NT 6.1; rv:41.0) Gecko/20100101 Firefox/41.0 AlexaToolbar/alxf-2.21
• Mozilla/5.0 (Android 5.0; Tablet; rv:41.0) Gecko/41.0 Firefox/41.0
• Mozilla/5.0 (Android 4.2.1; Mobile; rv:41.0) Gecko/41.0 Firefox/41.0
• Mozilla/5.0 (Windows NT 6.3; rv:41.0) Gecko/20100101 Firefox/41.01
• Mozilla/5.0 (Android 8.1.0; Mobile; rv:41.0) Gecko/41.0 Firefox/41.0
• Mozilla/5.0 (Android 4.1.1; Tablet; rv:41.0) Gecko/41.0 Firefox/41.0
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:41.0.1) Gecko/20100101 Firefox/41.0.1
• Mozilla/5.0 (Android 5.0.2; Tablet; rv:41.0) Gecko/41.0 Firefox/41.0
• Mozilla/5.0 (Android 4.3; Mobile; rv:41.0) Gecko/41.0 Firefox/41.0
• Mozilla/5.0 (Android 4.0.4; Mobile; rv:41.0) Gecko/41.0 Firefox/41.0
• Mozilla/5.0 (Android 5.1.1; Tablet; rv:41.0) Gecko/41.0 Firefox/41.0
• Mozilla/5.0 (Android 7.0; Mobile; rv:41.0) Gecko/41.0 Firefox/41.0
• Mozilla/5.0 (Android 4.1.2; Tablet; rv:41.0) Gecko/41.0 Firefox/41.0
• Mozilla/5.0 (Android 5.0.2; Mobile; rv:41.0) Gecko/41.0 Firefox/41.0
• Mozilla/5.0 (Android 5.1; Mobile; rv:41.0) Gecko/41.0 Firefox/41.0
• Mozilla/5.0 (Android 5.0; Mobile; rv:41.0) Gecko/41.0 Firefox/41.0
• Mozilla/5.0 (Android 6.0.1; Mobile; rv:41.0) Gecko/41.0 Firefox/41.0
• Mozilla/5.0 (Windows NT 6.3; WOW64; rv:41.0) Gecko/20100101 Firefox/41.0 AlexaToolbar/p6loNWsf-2.2
• Mozilla/5.0 (Windows NT 6.1; rv:41.0; WUID=37a90dab6cb089875f15095a7d937e71; WTB=6787) Gecko/20100101 Firefox/41.0
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:41.0; WUID=a3f6bde57a425117bddbf3cccc147ce2; WTB=23890) Gecko/20100101 Firefox/41.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:41.0) Gecko/20100101 Firefox/41.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X x.y; rv:42.0) Gecko/20100101 Firefox/41.0
• Mozilla/5.0 (Android 4.4; Tablet; rv:41.0) Gecko/41.0 Firefox/41.0
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:41.0) Gecko/20100101 Firefox/41.0 OWASMIME/4.0500
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:21.0) Gecko/20100101 Firefox/41.0
• Mozilla/5.0 (Windows NT 6.3; WOW64; rv:41.0) Gecko/20100101 Firefox/41.0 BLNGBAR BLNGBAR BLNGBAR BLNGBAR BLNGBAR BLNGBAR BLNGBAR BLNGBAR BLNGBAR BLNGBAR BLNGBAR
• Mozilla/5.0 (Windows NT 6.1; rv:6.0) Gecko/20110814 Firefox/41.0.7
• Mozilla/5.0 (Android 4.2.2; Tablet; rv:41.0) Gecko/41.0 Firefox/41.0
• Mozilla/5.0 (Windows NT 10.0; WOW64; rv:41.0) Gecko/20100101 Firefox/41.0 AlexaToolbar/alxf-2.21
• Mozilla/5.0 (Windows NT 6.3; WOW64; rv:41.0) Gecko/20100101 Firefox/41.0 Light/41.0
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:41.0; WUID=6d0ff7d46f1cb4b0bf65e4ce14ab6e9d; WTB=592) Gecko/20100101 Firefox/41.0
• Mozilla/5.0 (Windows NT 6.3; WOW64; rv:41.0) Gecko/20100101 Firefox/41.0 BLNGBAR BLNGBAR BLNGBAR BLNGBAR
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:41.0) Gecko/20100101 Firefox/41.0 DT-Browser/DTB7.41.0.21_01
• Mozilla/5.0 (Android 4.4.2; Mobile; rv:41.0) Gecko/41.0 Firefox/41.0
• Mozilla/5.0 (Mobile; rv:41.0) Gecko/41.0 Firefox/41.0
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:41.0; WUID=3d9e13f05458203656dda8dad533016a; WTB=18194) Gecko/20100101 Firefox/41.0
• Mozilla/5.0 (Android 4.2.2; Mobile; rv:41.0) Gecko/41.0 Firefox/41.0
• Mozilla/5.0 (Windows NT 10.0; rv:41.0; WUID=6ec470bdbec36fccadce089a9f44b91d; WTB=4003) Gecko/20100101 Firefox/41.0
• Mozilla/5.0 (Android; Mobile; rv:41.0) Gecko/41.0 Firefox/41.0
• Mozilla/5.0 (Android; Tablet; rv:41.0) Gecko/41.0 Firefox/41.0
• Mozilla/5.0 (Windows NT 6.1; rv:41.0; WUID=80af9e080af446413f2a228a12fc2d5e; WTB=3367) Gecko/20100101 Firefox/41.0
• Mozilla/5.0 (Windows NT 5.2; WOW64; rv:41.0) Gecko/20100101 Firefox/41.0
• Mozilla/5.0 (Windows NT 5.1; rv:41.0) Gecko/20100101 Firefox/41.0 AlexaToolbar/alxf-2.21
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:41.0 6034) Gecko/20100101 Firefox/41.0
• Mozilla/5.0 (Windows NT 6.1; rv:41.0) Gecko/20100101 Firefox/41.0 DT-Browser/DTB7.41.0.21_01
• Mozilla/5.0 (Windows NT 5.1; WOW64; rv:41.0) Gecko/20100101 Firefox/41.0
• Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:41.0) Gecko/20100101 Firefox/41.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:41.0) Gecko/20100101 Firefox/41.0
• Mozilla/5.0 (Windows NT 10.0; WOW64; rv:41.0) Gecko/20100101 Firefox/41.0 OWASMIME/4.0500
• Mozilla/5.0 (Windows NT 6.0; WOW64; rv:41.0) Gecko/20100101 Firefox/41.0
• Mozilla/5.0 (X11; Linux i686 on x86_64; rv:41.0) Gecko/20100101 Firefox/41.0
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:41.0) Gecko/20100101 Firefox/41.0 AlexaToolbar/alxf-2.21
• Mozilla/5.0 (X11; FreeBSD amd64; rv:41.0) Gecko/20100101 Firefox/41.0
• Mozilla/5.0 (Android 4.4.4; Mobile; rv:41.0.2) Gecko/41.0.2 Firefox/41.0.2
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:41.0) Gecko/20100101 Firefox/41.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:41.0) Gecko/20100101 Firefox/41.0
• Mozilla/5.0 (Mobile; OPENC; rv:41.0) Gecko/41.0 Firefox/41.0
• Mozilla/5.0 (X11; Linux i686; rv:41.0) Gecko/20100101 Firefox/41.0
• Mozilla/5.0 (Windows NT 5.1; rv:41.0) Gecko/20100101 Firefox/41.0,gzip(gfe)
• Mozilla/5.0 (Windows NT 6.3; Win64; x64; rv:41.0) Gecko/20100101 Firefox/41.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:41.0) Gecko/20100101 Firefox/41.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:41.0) Gecko/20100101 Firefox/41.0
• Mozilla/5.0 (Windows NT 5.2; rv:41.0) Gecko/20100101 Firefox/41.0
• Mozilla/5.0 (Android 4.4; Mobile; rv:41.0) Gecko/41.0 Firefox/41.0
• Mozilla/5.0 (Windows NT 6.2; Win64; rv:41.0) Gecko/20100101 Firefox/41.0
• Mozilla/5.0 (Windows NT 6.2; rv:41.0) Gecko/20100101 Firefox/41.0
• Mozilla/5.0 (X11; Linux x86_64; rv:41.0) Gecko/20100101 Firefox/41.0
• Mozilla/5.0 (Windows NT 6.0; rv:41.0) Gecko/20100101 Firefox/41.0
• Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:41.0) Gecko/20100101 Firefox/41.0
• Mozilla/5.0 (Android 4.4.4; Mobile; rv:41.0) Gecko/41.0 Firefox/41.0
• Mozilla/5.0 (Windows NT 6.2; WOW64; rv:41.0) Gecko/20100101 Firefox/41.0
• Mozilla/5.0 (Windows NT 6.3; rv:41.0) Gecko/20100101 Firefox/41.0
• Mozilla/5.0 (Windows; U; Windows NT 6.3; en; rv:41.0.1) Gecko/20100914 Firefox/41.0.1
• Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:41.0) Gecko/20100101 Firefox/41.0
• Mozilla/5.0 (Windows NT 6.3; WOW64; rv:41.0) Gecko/20100101 Firefox/41.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:41.0) Gecko/20100101 Firefox/41.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:41.0) Gecko/20100101 Firefox/41.0
• Mozilla/5.0 (Windows NT 10.0; rv:41.0) Gecko/20100101 Firefox/41.0
• Mozilla/5.0 (X11; Fedora; Linux i686; rv:41.0) Gecko/20100101 Firefox/41.0
• Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:41.0) Gecko/20100101 Firefox/41.0
• Mozilla/5.0 (Windows NT 5.1; rv:41.0) Gecko/20100101 Firefox/41.0
• Mozilla/5.0 (Windows NT 6.1; rv:41.0) Gecko/20100101 Firefox/41.0