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 (Macintosh; Intel Mac OS X 10 12_9; rv:1.9.3.20) Gecko/ Firefox/6.0
• Mozilla/5.0 (Windows NT 5.2; rv:6.0) Gecko/2010417 Firefox/6.0
• Mozilla/5.0 (Windows NT 5.0; rv:6.0) Gecko/20161123 Firefox/6.0
• Mozilla/5.0 (Linux i686; rv:6.0) Gecko/201627 Firefox/6.0
• Mozilla/5.0 (Windows NT 6.1; rv:6.0) Gecko/200637 Firefox/6.0
• Mozilla/5.0 (Windows NT 5.1; nhn-MX; rv:1.9.2.20) Gecko/2016-11-16 04:06:00 Firefox/6.0
• Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6.7; rv:6.0) Gecko/20100101 Firefox/6.0.7
• Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5.5; rv:6.0) Gecko/20100101 Firefox/6.0.7
• Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.8.8; rv:6.0) Gecko/20100101 Firefox/6.0.6
• Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6.3; rv:6.0) Gecko/20100101 Firefox/6.0.1
• Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.10.4; rv:6.0) Gecko/20100101 Firefox/6.0.6
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.5.3; rv:6.0) Gecko/20100101 Firefox/6.0.8
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.5.6; rv:6.0) Gecko/20100101 Firefox/6.0.3
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8.0; rv:6.0) Gecko/20100101 Firefox/6.0.6
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8.6; rv:6.0) Gecko/20100101 Firefox/6.0.8
• Mozilla/5.0 (Windows NT 5.1; WOW64; rv:6.0) Gecko/20100101 Firefox/6.0.4
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6.4; rv:6.0) Gecko/20100101 Firefox/6.0.5
• Mozilla/5.0 (Windows NT 5.2; rv:6.0) Gecko/2003212 Firefox/6.0
• Mozilla/5.0 (Windows NT 5.0; rv:6.0) Gecko/20101214 Firefox/6.0
• Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.7.2; rv:6.0) Gecko/20100101 Firefox/6.0.2
• Mozilla/5.0 (Windows NT 6.0; Win64; x64; rv:6.0) Gecko/20100101 Firefox/6.0.8
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10.4; rv:6.0) Gecko/20100101 Firefox/6.0.1
• Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.8.1; rv:6.0) Gecko/20100101 Firefox/6.0.1
• Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.8.9; rv:6.0) Gecko/20100101 Firefox/6.0.7
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8.2; rv:6.0) Gecko/20100101 Firefox/6.0.4
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6.3; rv:6.0) Gecko/20100101 Firefox/6.0.2
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.5.8; rv:6.0) Gecko/20100101 Firefox/6.0.3
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.5.6; rv:6.0) Gecko/20100101 Firefox/6.0.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6.4; rv:6.0) Gecko/20100101 Firefox/6.0.3
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6.4; rv:6.0) Gecko/20100101 Firefox/6.0.1
• Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5.3; rv:6.0) Gecko/20100101 Firefox/6.0.6
• Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.10.5; rv:6.0) Gecko/20100101 Firefox/6.0.1
• Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5.1; rv:6.0) Gecko/20100101 Firefox/6.0.8
• Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6.1; rv:6.0) Gecko/20100101 Firefox/6.0.1
• Mozilla/5.0 (Macintosh; U; PPC Mac OS X 10.6.2; rv:6.0) Gecko/20100101 Firefox/6.0.3
• Mozilla/5.0 (Windows NT 5.0; Win64; x64; rv:6.0) Gecko/20100101 Firefox/6.0.2
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9.8; rv:6.0) Gecko/20100101 Firefox/6.0.3
• Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6.6; rv:6.0) Gecko/20100101 Firefox/6.0.3
• Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5.8; rv:6.0) Gecko/20100101 Firefox/6.0.2
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9.8; rv:6.0) Gecko/20100101 Firefox/6.0.5
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9.6; rv:6.0) Gecko/20100101 Firefox/6.0.1
• Mozilla/5.0 (Windows NT 6.0; WOW64; rv:6.0) Gecko/20100101 Firefox/6.0.6
• Mozilla/5.0 (Macintosh; U; PPC Mac OS X 10.7.8; rv:6.0) Gecko/20100101 Firefox/6.0.4
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8.0; rv:6.0) Gecko/20100101 Firefox/6.0.3
• Mozilla/5.0 (X11; Linux x86_64; rv:6.0) Gecko/20100101 Firefox/6.0.7
• Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.10.5; rv:6.0) Gecko/20100101 Firefox/6.0.8
• Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5.0; rv:6.0) Gecko/20100101 Firefox/6.0.9
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.5.7; rv:6.0) Gecko/20100101 Firefox/6.0.8
• Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6.0; rv:6.0) Gecko/20100101 Firefox/6.0.0
• Mozilla/5.0 (Windows NT 6.0; rv:6.0) Gecko/20100101 Firefox/6.0.8
• Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6.1; rv:6.0) Gecko/20100101 Firefox/6.0.7
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6.7; rv:6.0) Gecko/20100101 Firefox/6.0.9
• Mozilla/5.0 (Windows NT 5.0; rv:6.0) Gecko/20100101 Firefox/6.0.3
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.5.6; rv:6.0) Gecko/20100101 Firefox/6.0.5
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7.9; rv:6.0) Gecko/20100101 Firefox/6.0.8
• Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5.7; rv:6.0) Gecko/20100101 Firefox/6.0.6
• Mozilla/5.0 (Windows NT 6.2; Win64; x64; rv:6.0) Gecko/20100101 Firefox/6.0.8
• Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5.1; rv:6.0) Gecko/20100101 Firefox/6.0.2
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9.4; rv:6.0) Gecko/20100101 Firefox/6.0.5
• Mozilla/5.0 (Windows NT 6.1; rv:6.0) Gecko/20100101 Firefox/6.0.7
• Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.10.0; rv:6.0) Gecko/20100101 Firefox/6.0.3
• Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:6.0) Gecko/20100101 Firefox/6.0.6
• Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.8.6; rv:6.0) Gecko/20100101 Firefox/6.0.3
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6.5; rv:6.0) Gecko/20100101 Firefox/6.0.7
• Mozilla/5.0 (X11; Linux i686; rv:6.0) Gecko/20100101 Firefox/6.0.9
• Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:6.0) Gecko/20100101 Firefox/6.0.4
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7.3; rv:6.0) Gecko/20100101 Firefox/6.0.7
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.5.3; rv:6.0) Gecko/20100101 Firefox/6.0.3
• Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.9.4; rv:6.0) Gecko/20100101 Firefox/6.0.5
• Mozilla/5.0 (X11; Linux i686; rv:6.0) Gecko/20100101 Firefox/6.0.0
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8.3; rv:6.0) Gecko/20100101 Firefox/6.0.5
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7.5; rv:6.0) Gecko/20100101 Firefox/6.0.7
• Mozilla/5.0 (Macintosh; U; PPC Mac OS X 10.8.3; rv:6.0) Gecko/20100101 Firefox/6.0.6
• Mozilla/5.0 (Windows NT 6.3; Win64; x64; rv:6.0) Gecko/20100101 Firefox/6.0.4
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8.0; rv:6.0) Gecko/20100101 Firefox/6.0.4
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10.0; rv:6.0) Gecko/20100101 Firefox/6.0.4
• Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.10.3; rv:6.0) Gecko/20100101 Firefox/6.0.8
• Mozilla/5.0 (Windows NT 5.2; Win64; x64; rv:6.0) Gecko/20100101 Firefox/6.0.9
• Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.8.8; rv:6.0) Gecko/20100101 Firefox/6.0.5
• Mozilla/5.0 (Windows NT 5.0; Win64; x64; rv:6.0) Gecko/20100101 Firefox/6.0.8
• Mozilla/5.0 (Windows NT 6.1; rv:6.0) Gecko/20100101 Firefox/6.0.2
• Mozilla/5.0 (Windows NT 5.2; rv:6.0) Gecko/20100101 Firefox/6.0.7
• Mozilla/5.0 (Windows NT 6.0; WOW64; rv:6.0) Gecko/20100101 Firefox/6.0.3
• Mozilla/5.0 (Windows NT 5.1; Win64; x64; rv:6.0) Gecko/20100101 Firefox/6.0.9
• Mozilla/5.0 (Windows NT 5.0; Win64; x64; rv:6.0) Gecko/20100101 Firefox/6.0.9
• Mozilla/5.0 (Windows NT 5.0; Win64; x64; rv:6.0) Gecko/20100101 Firefox/6.0.3
• Mozilla/5.0 (Windows NT 6.3; rv:6.0) Gecko/20100101 Firefox/6.0.9
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6.1; rv:6.0) Gecko/20100101 Firefox/6.0.5
• Mozilla/5.0 (Windows NT 6.2; WOW64; rv:6.0) Gecko/20100101 Firefox/6.0.4
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.5.9; rv:6.0) Gecko/20100101 Firefox/6.0.7
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9.8; rv:6.0) Gecko/20100101 Firefox/6.0.4
• Mozilla/5.0 (Windows NT 5.2; WOW64; rv:6.0) Gecko/20100101 Firefox/6.0.8
• Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6.5; rv:6.0) Gecko/20100101 Firefox/6.0.6
• Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.7.6; rv:6.0) Gecko/20100101 Firefox/6.0.5
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7.6; rv:6.0) Gecko/20100101 Firefox/6.0.9
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9.9; rv:6.0) Gecko/20100101 Firefox/6.0.7
• Mozilla/5.0 (Windows NT 6.3; Win64; x64; rv:6.0) Gecko/20100101 Firefox/6.0.6
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6.8; rv:6.0) Gecko/20100101 Firefox/6.0.9
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9.2; rv:6.0) Gecko/20100101 Firefox/6.0.3
• Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5.3; rv:6.0) Gecko/20100101 Firefox/6.0.2