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User-Agent Strings - Firefox - Full

We keep only the most current and major releases in the main page. This is the complete list of all Firefox strings that we have ever found or received - including those on the main page.

Firefox

Phoenix is dead - long live Firebird. Firebird is dead - long live Firefox. Firebird/Phoenix has morph'd into Firefox. The Mozilla roadmap shows Firefox as the browser for the next generation of Mozilla. Essentially (if we can paraphrase a very big page) the mozilla design team are saying that they will develop a set of components (browser, mail client, editor (composer) and others) which will work well together but will have their own development priorities and timeframes, rather than the current monolithic Mozilla structure. The historic Phoenix and Firebird strings are still on the main page 'cos we like to remind 'em of their humble beginnings. Note: For Firefox 3 and perhaps after, Minefield will remain the development version and always have 'pre' in the string, whereas GranParadiso is the release leg and will not have 'pre' in the string - so there you go. Shiretoko named for the Japanese Peninsula and a UN world heritage site (aren't we the smart ones) seems to be the development release leg for 3.5 - replacing GranParadiso? While Namoroka (a unique nature reserve in northeastern Madagascar) seems to be the 3.6 development release leg.

The 'mobile Firefox' is being developed under the current codename of Fennec (a small noctunal fox found in the Sahara desert) - man, who comes up with these names. But don't worry they'll change the name 427 times before release. Multi-platform - Linux and Windows Mobile so far.

Don't forget the Mozilla SeaMonkey project about which which J. Reynolds writes:

The SeaMonkey project is a community effort to deliver production-quality releases of code derived from the application formerly known as "Mozilla Application Suite". Whereas the main focus of the Mozilla Foundation is on Mozilla Firefox and Mozilla Thunderbird, our group of dedicated volunteers works to ensure that you can have "everything but the kitchen sink" and have it stable enough for corporate use.

Note: The seamonkey strings are under Mozilla.

Nathan Lineback supplied this reference to a bunch of screen shots showing the OS's to which Firefox (1.5 mostly) has been ported.

Windows FF users may want to check out palemoon which claims to be up to 25% faster than the moz port by optimizing the FF code base for Windows.

Curious and Clones (or even Curious Clones)

Mostly not supported by Mozilla

Mozilla/5.0 (Windows NT 5.1; rv:2.0) Gecko/20100101 Firefox/4.0

Explanation: Firefox Portable (FF/4) on XP (optimized for USB load). String from Thu Win - thanks.

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.4) Gecko/2008102920 Firefox/3.0.4 (Splashtop-v1.0.5.0)

Explanation:Firefox (3.0.4) branded for the HP splashtop platform. String from Jake Wasdin - thanks.

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8) Gecko/20051111 Firefox/1.5 BAVM/1.0.0

Explanation: The UA string from Firefox inside VMWare's Browser Appliance. String from Jake Wasdin - thanks.

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1a2pre) Gecko/2008073000 Shredder/3.0a2pre ThunderBrowse/3.2.1.8

Explanation: The UA string from Thunderbird nightly build of Version 3 (codenamed Shredder) with an embedded browser add-in called ThunderBrowse. String from Jake Wasdin - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7.10) Gecko/20050716 Thunderbird/1.0.6

Explanation: No idea what to do with this one since it's the UA string from Thunderbird when it reads an embedded email image from a web location. String from Zonjai Nezba - thanks.

Mobile Versions

Mozilla/5.0 (X11; U; Linux armv61; en-US; rv:1.9.1b2pre) Gecko/20081015 Fennec/1.0a1

Explanation: Alpha version of Mozilla Fennec (mobile Firefox) on Nokia N800. String from Jake Wasdin - thanks.

Development Versions

Mozilla/5.0 (Windows NT 7.0; Win64; x64; rv:3.0b2pre) Gecko/20110203 Firefox/4.0b12pre

Explanation: Development version of FF4 running on Windows 8. String from Shawn Long - thanks.

Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b7pre) Gecko/20100925 Firefox/4.0b7pre

Explanation: Latest Minefield (Firefox nightly) running under 64-bit Windows 7 Ultimate. This is the 32-bit version running under a 64-bit OS (for Flash and whatnot to work). String from Delian Entchev - thanks.

Mozilla/5.0 (X11; Linux i686 (x86_64); rv:2.0b4pre) Gecko/20100812 Minefield/4.0b4pre

Explanation: Firefox 4 nightly build running 32bit binary version on 64bit Linux. String from Jake Wasdin - thanks.

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9b5pre) Gecko/2008032619 Linpus/3.0-0.49.3.0b5pre.lp Minefield/3.0b5pre

Explanation: Firefox on Linpus (a new Linux Distro). String from Alan Mockford - thanks.

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.2.2pre) Gecko/20100225 Ubuntu/9.10 (karmic) Namoroka/3.6.2pre

Explanation: Mozilla security team pre-release builds of Firefox 3.6.x running on 32bit Ubuntu Linux 9.10 (Karmic). String from Daniel Hückmann - thanks.

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.6) Gecko/20100127 Gentoo Shiretoko/3.5.6

Explanation: Firefox 3.5.6 without the nasty branding messages on 32-bit Gentoo. String from Bill Longman - thanks.

Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.3a1pre) Gecko/20100128 Minefield/3.7a1pre

Explanation: Minefield alpha FF 3.7 on Linux x64. String from Jake Wasdin - thanks.

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.2) Gecko/20090803 Ubuntu/9.04 (jaunty) Shiretoko/3.5.2

Explanation: FireFox 3.5 without proprietary code and branding. Distributed as the firefox 3.5 package for Ubuntu Jaunty. String from John F. Miller - thanks.

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:2.0a1pre) Gecko/2008060602 Minefield/4.0a1p

Explanation: Briefly seen in the wild - Minefield alpha FF4 (no longer available). String from Jake Wasdin - thanks.

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.2a1pre) Gecko/20090403 Minefield/3.6a1pre

Explanation: Minefield alpha FF 3.6. String from Jake Wasdin - thanks.

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1b1pre) Gecko/20080916020338 Minefield/3.1b1pre

Explanation: Minefield (Firefox v3.1b1pre nightly build) on Linux. Note: date format change for Gecko version. String from Jake Wasdin - thanks.

Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.1b2) Gecko/20081201 Firefox/3.1b2

Explanation: Shiretoko (Firefox 3.1b2) on Windows 7 no less. Note: date format change for Gecko version. String from Joel Smith - thanks.

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1a2) Gecko/20080829071937 Shiretoko/3.1a2

Explanation: Shiretoko (Firefox v3.1) on Linux. String from Jake Wasdin - thanks.

Mozilla/5.0 (Windows; U; Windows NT 6.0 x64; en-US; rv:1.9pre) Gecko/2008072421 Minefield/3.0.2pre

Explanation: Minefield (Firefox v3) on Windows Server 2008. String from Julius Thyssen - thanks.

Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9a7)
 Gecko/2007080210 GranParadiso/3.0a7

Explanation: GranParadiso 1.9 alpha 7 (Firefox Pre-release v3) on Windows Vista. String from Joseph Christianson - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9b2pre) Gecko/2007120505 Minefield/3.0b2pre

Explanation: Mozilla Minefield (Firefox development) 3.0a9 (pre beta 2) nightly build (12/05/2007) on XP. Firefox 3 creeps closer. String from Keith Morikado - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9a9pre) Gecko/2007100205 Minefield/3.0a9pre

Explanation: Mozilla Minefield (Firefox development) 3.0a9 (Alpha) nightly build on XP. Firefox 3 creeps closer. String from Kyle Elbert - thanks.

Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9a4pre) Gecko/20070402 Minefield/3.0a4pre

Explanation: Mozilla Minefield (Firefox) 3.0a4 (Alpha) nightly build on Vista with SP7 (just kidding it's SP6). String from anonymous - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9a2pre) Gecko/20070206 Minefield/3.0a2pre

Explanation: Mozilla Minefield (Firefox) 3.0a2 (Alpha) nightly build on XP SP2. Jason says basic browser is solid but most extensions do not work. String from Jason Price - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9a1) Gecko/20061204 GranParadiso/3.0a1

Explanation: Mozilla GranParadiso (Firefox) 3.0a1 (Alpha) on XP SP2. Alex tells us its good enough for day-to-day usage - if your needs are modest. Must admit the name is better than Minefield! Man they do like to pay around with names - must have 1,000 marketing people in the team. String from Alex Williams - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.2 x64; en-US; rv:1.9a1) Gecko/20061007 Minefield/3.0a1

Explanation: Mozilla Minefield(Firefox) 3.0a1 (Alpha) 64-bit built from 20061007 CVS running on Windows XP 64-bit edition SP1. Jason tells us its slow and with no plugins - so don't all rush to get one. String from Jason Mayfield-Lewis - thanks.

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.1) Gecko/20061102 BonEcho/2.0

Explanation: Quote 'Bon Echo 2 (Firefox) running on DSL 4.4.10 running on SunxVM Virtual Box running on Ubuntu 8.10 AMD 64 just because....' Gotta love us geeks. String from James Passmore - thanks.

Mozilla/5.0 (X11; U; Linux x86_64; de; rv:1.8.1.1) Gecko/20061223 BonEcho/2.0.0.

Explanation: Firefox 2.0 on Debian - apparently as a result of the dispute that caused IceWeasel debian have decided to rebrand the basic firefox as BonEcho - but there is a flag that you can use when buiding from source to use the standard firefox string (mozbranding) Details here. String from Sebastian Knust - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8) Gecko/20060319 Firefox/2.0a1

Explanation: Firefox 2.x (aka Bonecho alpha 1) which you can get from this site. String from Jonathan McCormack - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.2 x64; en-US; rv:1.9a1) Gecko/20060214 Firefox/1.6a1

Explanation: Firefox 1.6 (aka Deer Park Alpha 2) native 64-bit version on XP x64 (which you can get from this site) on an AMD Athlon X2. String from Carl Karlsson - thanks.

Mozilla/5.0 (BeOS; U; BeOS BePC; en-US; rv:1.9a1) Gecko/20051002 Firefox/1.6a1

Explanation: Firefox 1.6 (aka Deer Park Alpha 2) on YellowTab Zeus 1.1 under BeOS no less . String from Jonathan McCormack - thanks. BTW this appears to have been built from CVS source not released versions.

Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.9a1) Gecko/20051102 Firefox/1.6a1

Explanation: Firefox 1.6 (aka Deer Park Alpha 2) on windows 2K. String from Joseph Christianson - thanks. BTW this appears to have been built from CVS source not released versions.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8) Gecko/20051111 Firefox/1.5

Explanation: Firefox 1.5 (aka 1.5 RC3) on XP SP2. String from Deyan Mavrov - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041103 Firefox/1.0RC2

Explanation: Firefox 1.0 Release Candidate 2 on Win XP Pro. String from Dennis Henderson - thanks.

Releases - v25 Series

Mozilla/5.0 (Windows NT 6.2; WOW64; rv:25.0) Gecko/20100101 Firefox/25.0

Explanation: Firefox 25 (32-bit) on Window 8 (64-bit). String from teste testing (yeah, right) - but thanks whoever you are.

Releases - v24 Series

Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Firefox/24.0

Explanation: Firefox 24 (32-bit) on Window 7 (64-bit). String from Us - thanks - you're welcome.

Releases - v21 Series

Mozilla/5.0 (Windows NT 6.1; WOW64; rv:21.0) Gecko/20100101 Firefox/21.0

Explanation: Firefox 21 (32-bit) on Window 7 (64-bit). String from Us - thanks - you're welcome.

Releases - v20 Series

Mozilla/5.0 (Windows NT 6.1; WOW64; rv:20.0) Gecko/20100101 Firefox/20.0

Explanation: Firefox 20 on Window 7. String from Us - thanks - you're welcome.

Releases - v19 Series

Mozilla/5.0 (X11; Linux x86_64; rv:19.0) Gecko/20100101 Firefox/19.0

Explanation: Firefox 19 on 64 bit Linux distribution. String from Deepak Pareek - thanks.

Releases - v18 Series

Mozilla/5.0 (Windows NT 6.1; WOW64; rv:18.0) Gecko/20100101 Firefox/18.0

Explanation: Firefox 18 on Windows 7 64 bit. String from Alex Poylisher - thanks.

Mozilla/5.0 (X11; NetBSD amd64; rv:18.0) Gecko/20130120 Firefox/18.0

Explanation: Firefox 18 on NetBSD 6.99.16. String from Alex Poylisher - thanks.

Releases - v17 Series

Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/20100101 Firefox/17.0

Explanation: Firefox 17 on Windows 7. String from Maciej Kowalczyk - thanks.

Releases - v16 Series

Mozilla/5.0 (Windows NT 6.1; WOW64; rv:16.0) Gecko/20100101 Firefox/16.0

Explanation: Firefox 16 on Windows 7 (SP1). String from Emily Jackson - thanks.

Releases - v15 Series

Mozilla/5.0 (Windows NT 5.1; rv:15.0) Gecko/20100101 Firefox/15.0.1

Explanation: Firefox 15 on Windows XP. String from Enrique Fernandez Lopez - thanks.

Mozilla/5.0 (Windows NT 5.1; rv:15.0) Gecko/20100101 Firefox/15.0

Explanation: Firefox 15 on Windows XP. String from Elsayed Youssef - thanks.

Releases - v14 Series

Mozilla/5.0 (Windows NT 6.1; WOW64; rv:14.0) Gecko/20100101 Firefox/14.0.1

Explanation: Firefox 14.0.1 on Windows Windows 7. String from G Diddit - thanks.

Releases - v13 Series

Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:13.0) Gecko/20100101 Firefox/13.0.1

Explanation: Firefox 13.0.1 on iMac OSX 10.7.4. String from Gregg Luhring - thanks.

Mozilla/5.0 (Windows NT 5.1; rv:13.0) Gecko/20100101 Firefox/13.0

Explanation: Firefox 13 on Windows XP. String from Vas Vaskel - thanks.

Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:13.0) Gecko/20100101 Firefox/13.0

Explanation: Firefox 13 on Ubuntu. String from Simon Finch - thanks.

Releases - v12 Series

Mozilla/5.0 (Windows NT 6.1; rv:11.0) Gecko/20100101 Firefox/11.0

Explanation: Firefox 11 on Windows 7. String from Shane Turner, Richard Wickens, Don Emmons and Daniel Beltran - thanks.

Releases - v11 Series

Mozilla/5.0 (Windows NT 6.1; rv:11.0) Gecko/20100101 Firefox/11.0

Explanation: Firefox 11 on Windows 7. String from Shane Turner, Richard Wickens, Don Emmons and Daniel Beltran - thanks.

Releases - v10 Series

Mozilla/5.0 (Macintosh; PPC Mac OS X 10.4; rv:10.0.10) Gecko/20121024 Firefox/10.0.10 TenFourFox/G3

Explanation: Firefox 10 on MAC PowerBook (from the TenFourFox project - bless 'em!). String from Justin Parsin - thanks.

Mozilla/5.0 (Windows NT 6.1; WOW64; rv:10.0) Gecko/20100101 Firefox/10.0

Explanation: Firefox 10 on Windows 7 Pro. String from Ed Scherer - thanks.

Releases - v9 Series

Mozilla/5.0 (Ubuntu; X11; Linux x86_64; rv:9.0.1) Gecko/20100101 Firefox/9.0.1

Explanation: Firefox 8 on Ubuntu 11.04. String from Arnold Schiller - thanks.

Releases - v8 Series

Mozilla/5.0 (Windows NT 5.1; rv:8.0) Gecko/20100101 Firefox/8.0

Explanation: Firefox 8 on XP. String from Anonymous - but thanks anyway.

Releases - v7 Series

Mozilla/5.0 (Windows NT 5.1; rv:7.0.1) Gecko/20100101 Firefox/7.0.1

Explanation: Firefox 7 on XP Pro with SP3. String from Bruce Le Bane - thanks.

Mozilla/5.0 (Windows NT 6.1; rv:7.0.1) Gecko/20100101 Firefox/7.0.1

Explanation: Firefox 7 on Windows 7 (x86). String from Zarek Jenkinson and David Asfaha - thanks.

Releases - v6 Series

Mozilla/5.0 (X11; Linux i686; rv:6.0.2) Gecko/20100101 Firefox/6.0.2

Explanation: Firefox 6 on some Linux distribution. String from P Curtis - thanks.

Mozilla/5.0 (X11; Linux i686; rv:6.0) Gecko/20100101 Firefox/6.0

Explanation: Firefox 6 on some Linux distribution. String from Chris Chane - thanks.

Releases - v5 Series

Mozilla/5.0 (Windows NT 6.1; WOW64; rv:5.0) Gecko/20100101 Firefox/5.0

Explanation: Firefox 5 on Windows 7 64-bit. String from Florian Nourrisse and Ryan Creecy- thanks.

Releases - v4 Series

Mozilla/5.0 (X11; Linux x86_64; rv:2.0.1) Gecko/20110506 Firefox/4.0.1

Explanation: Firefox 4 on Linux 64 bit mode. String from Shawn Long - thanks.

Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0.1) Gecko/20100101 Firefox/4.0.1

Explanation: Firefox 4 on Windows 7 64-bit Home Pro. String from Us - thanks - you're welcome.

Mozilla/5.0 (Windows NT 6.0; rv:2.0b7) Gecko/20100101 Firefox/4.0b7

Explanation: Firefox 4 bet b7 on Vista. String from Rob Dukarski - thanks.

Releases - v3.6 Series

Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.16) Gecko/20110319 Firefox/3.6.16

Explanation: Firefox 3.6.16 on Windows 7. String from Ravelino Dsouza - thanks.

Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.13) Gecko/20101211 Namoroka/3.6.13

Explanation: Firefox 3.6.13 on Windows 7 - release version but with the development project code name. String from James Luzenski - thanks.

Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.13) Gecko/20101230 Mandriva Linux/1.9.2.13-0.2mdv2010.2 (2010.2) Firefox/3.6.13

Explanation: Firefox 3.6.13 on on Mandriva PowerPack 2010.2 64 bit. String from Dylan Myers - thanks.

Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.13) Gecko/20101206 Ubuntu/10.10 (maverick) Firefox/3.6.13

Explanation: Firefox 3.6.13 on Ubuntu 11.10 (Maverick Meerkat). String from Daniel Arrendondo - thanks.

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.2.13) Gecko/20101206 Ubuntu/10.10 (maverick) Firefox/3.6.13

Explanation: Firefox 3.6.13 on Ubuntu 11.04 (Natty Narwhal). String from Dodger (aren't we all) - thanks.

Mozilla/5.0 (Windows; U; Windows NT 6.1; nl; rv:1.9.2.13) Gecko/20101203 Firefox/3.6.13

Explanation: Firefox 3.6.13 on Windows Vista. String from Christophe Uytterhaeghe - thanks.

Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.2.11) Gecko/20101012 Firefox/3.6.11

Explanation: Firefox 3.6.11 on Windows Vista Ultimate (bit of a contradiction of terms, with hindsight). String from Erin Toombs - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; es-ES; rv:1.9.2.10) Gecko/20100914 Firefox/3.6.10 (.NET CLR 3.5.30729)

Explanation: Firefox 3.6.10 on Windows XP. String from Andres Alvarez, Travis Israels - thanks.

Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.2.9) Gecko/20100824 Firefox/3.6.9

Explanation: Firefox 3.6.9 on Mac OS X. String from Matt Greek - thanks.

Mozilla/5.0 (X11; U; Linux x86_64; de; rv:1.9.2.8) Gecko/20100723 Ubuntu/10.04 (lucid) Firefox/3.6.8

Explanation: Firefox 3.6.8 on Ubuntu 10.4. String from Tobias Schmidl - thanks.

Mozilla/5.0 (X11; U; Linux i686; fr; rv:1.9.2.6) Gecko/20100628 Ubuntu/10.04 (lucid) Firefox/3.6.6

Explanation: Firefox 3.6.6 on Ubuntu 10.4 (Probably called Flaming Flamingo or something equally bizarre). String from El Paitai - thanks.

Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.2.6) Gecko/20100625 Firefox/3.6.6 (.NET CLR 3.5.30729)

Explanation: Firefox 3.6.6 on Windows Vista (with .NET framework visible). String from Mike Long - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3 GTB7.0 ( .NET CLR 3.5.30729)

Explanation: Firefox 3.6.3 on Windows XP (with .NET framework visible). String from Blazenko Karesin - thanks.

Mozilla/5.0 (X11; U; SunOS sun4u; en-US; rv:1.9.2.3) Gecko/20100403 Firefox/3.6.3

Explanation: Firefox 3.6.3 on SunOS. String from Brandt Daniels - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3

Explanation: Firefox 3.6.3 on Windows XP. String from Zvonko Wakowski - thanks.

Mozilla/5.0 (Windows; U; Windows NT 6.1; he; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3

Explanation: Firefox 3.6.3 on Windows 7. String from Beny Ben - thanks.

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.2.3) Gecko/20100423 Ubuntu/10.04 (lucid) Firefox/3.6.3

Explanation: Firefox 3.6.3 on Ubuntu 10.4. String from Jonathan McCormack - thanks.

Mozilla/5.0 (Windows; U; Windows NT 6.1; it; rv:1.9.2) Gecko/20100115 Firefox/3.6

Explanation: Firefox 3.6 on Windows 7. String from Andrea Cardinali - thanks.

Releases - v3.5 Series

Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.8) Gecko/20100215 Solaris/10.1 (GNU) Superswan/3.5.8 (Byte/me)

Explanation: Firefox 3.5.8 on Solaris. Superswan seems to be a IPSEC client - or something. String from Daniel McDicken - thanks.

Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.1.7) Gecko/20091221 Firefox/3.5.7 (.NET CLR 3.5.30729)

Explanation: Firefox 3.5.7 on Windows Vista. String from Bryan Plasters - thanks.

Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.3) Gecko/20091020 Linux Mint/8 (Helena) Firefox/3.5.3

Explanation: Firefox 3.5.3 on Linux Mint 8 (Helena) a YALD (yet Another Linux Distribution) and based on Ubuntu. String from Jake Wasdin - thanks.

Mozilla/5.0 (X11; U; OpenBSD i386; en-US; rv:1.9.1) Gecko/20090702 Firefox/3.5

Explanation: Firefox 3.5 on OpenBSD 4.6. String from Jake Wasdin - thanks.

Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.1.6) Gecko/20091201 Firefox/3.5.6 GTB5

Explanation: Firefox 3.5.6 on Windows Vista. String from Rebecca Huff - thanks.

Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.5) Gecko/20091107 Firefox/3.5.5

Explanation: Firefox 3.5.5 on Slackware Linux 13.0 (x86_64). String from Alparslan Kangeldi - thanks.

Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.1.5) Gecko/20091102 Firefox/3.5.5 (.NET CLR 3.5.30729)

Explanation: Firefox 3.5.5 on Windows Server 2008. String Frederic Rudman - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; de; rv:1.9.1.5) Gecko/20091102 (BT-nasa) Firefox/3.5.5 (.NET CLR 3.5.30729)

Explanation: Firefox 3.5.5 on Windows XP - with branding plug-in (http://brandthunder.com/). String from Thomas Walloschke - thanks.

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.3) Gecko/20090911 Jolicloud/alpha (robby) Firefox/3.5.3

Explanation: Firefox 3.5.3 on Jolicloud (a Linux derivative optimized for netbooks). String Jake Wasdin - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.3) Gecko/20090824 Firefox/3.5.3 GTB5

Explanation: Firefox 3.5.3 on Windows XP Pro. String from Rob Spooner - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.3) Gecko/20090824 Firefox/3.5.3 GTB5 (.NET CLR 3.5.30729) Scribd Toolbar 1.0

Explanation: Firefox 3.5.3 on Windows XP Pro. String from Jeff Belna - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1) Gecko/20090624 Firefox/3.5 (.NET CLR 3.5.30729)

Explanation: Firefox 3.5 on Windows XP SP3. String Sawyer Aaron - thanks.

Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9.1) Gecko/20090624 Firefox/3.5

Explanation: Firefox 3.5 on OS X (Leopard). String Dave Myron - thanks.

Mozilla/5.0 (X11; U; OpenBSD i386; en-US; rv:1.9.1) Gecko/20090702 Firefox/3.5

Explanation: Firefox 3.5 on OpenBSD 4.6. String Jake Wasdin - thanks.

Releases - v3 Series

Mozilla/5.0 (X11; U; SunOS i86pc; en-US; rv:1.9.1b3) Gecko/20090429 Firefox/3.1b3

Explanation: Firefox 3.1b3 on OpenSolaris 2009.06 on x86. String Jake Wasdin - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.0.14) Gecko/2009082707 Firefox/3.0.14 (.NET CLR 3.5.30729)

Explanation: Firefox 3.0.13 on Windows XP. String P.K. - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; de; rv:1.9.0.13) Gecko/2009073022 Firefox/3.0.13

Explanation: Firefox 3.0.13 on Windows XP. String Adrian Suter - thanks.

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.11) Gecko/2009060309 Ubuntu/9.10 (karmic) Firefox/3.0.11

Explanation: Default web browser (Firefox 3.0.11) on the Karmic Koala daily release of Ubuntu. String from Jake Wasdin - thanks.

Mozilla/5.0 (Windows; U; Windows NT 6.0; en-GB; rv:1.9.0.11) Gecko/2009060215 Firefox/3.0.11 (.NET CLR 3.5.30729)

Explanation: Firefox 3.0.11 on Windows Vista - interesting .NET string. String from Asik Misah - thanks.

Mozilla/5.0 (Windows; U; Windows NT 6.1; en-GB; rv:1.9.0.10) Gecko/2009042316 Firefox/3.0.10

Explanation: Firefox 3.0.10 on Windows 7. String from Joseph Christianson - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.0.10) Gecko/2009042316 Firefox/3.0.10 Creative ZENcast v1.02.12

Explanation: Firefox 3.0.10 on Windows XP . From Michael "The Creative ZENcast v1.02.12 is an add-on that comes with many Creative MP3 players for creating podcasts, and is a part of a tool package that comes with the player (in this case a ZEN V Plus 4Gb unit)". String from Michael Cornwall - thanks.

Mozilla/5.0 (Windows; U; Windows NT 6.1; en-GB; rv:1.9.0.10) Gecko/2009042316 Firefox/3.0.10

Explanation: Firefox 3.0.10 on Windows 7. String from Joseph Christianson - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.0.10) Gecko/2009042316 Firefox/3.0.10

Explanation: Firefox 3.0.10 on Windows XP. String from Jas Saun - thanks.

Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.0.6) Gecko/2009011913 Firefox/3.0.6

Explanation: Firefox 3.0.6 on Windows Vista. String from Joseph Christianson - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.0.5) Gecko/2008120122 Firefox/3.0.5

Explanation: Firefox 3.0.5 on XP. String from Sivelin Minev - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.9.0.5) Gecko/2008120122 Firefox/3.0.5

Explanation: Firefox 3.0.5 on windows Server 2000. String from us - thanks. You're welcome.

Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.0.4) Gecko/2008111319 Ubuntu/8.10 (intrepid) Firefox/3.0.4

Explanation: Firefox 3.0.4 on Linux (Ubuntu). String from Robert Murdock - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.0.3) Gecko/2008092417 Firefox/3.0.3

Explanation: Firefox 3.0.3 on XP. String from P.H. and Jared Hardy - thanks.

Mozilla/5.0 (Macintosh; U; PPC Mac OS X 10.5; en-US; rv:1.9.0.3) Gecko/2008092414 Firefox/3.0.3

Explanation: Firefox 3.0.3 on Linux (Ubuntu). String from Vartan Simonian - thanks.

Mozilla/5.0 (Macintosh; U; PPC Mac OS X 10.5; en-US; rv:1.9.0.3) Gecko/2008092414 Firefox/3.0.3

Explanation: Firefox 3.0.3 on Mac OSX using PPC. String from David Charlap - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.0.3) Gecko/2008092417 Firefox/3.0.3

Explanation: Firefox 3.0.3 on XP. String from Noah Jacobson - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.9.0.2) Gecko/2008091620 Firefox/3.0.2

Explanation: Firefox 3.0.2 on XP (UK english variation). String from Chris Douglas - thanks.

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.1) Gecko/2008072403 Mandriva/3.0.1-1mdv2008.1 (2008.1) Firefox/3.0.1 GTB5 Ubiquity/0.1.5

Explanation: Firefox 3 on Mandriva Linux with Google Toolbar 5 (GTB5) and Ubiquity 0.1.5. . String from Jake Wasdin - thanks.

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.1) Gecko/2008072403 Mandriva/3.0.1-1mdv2008.1 (2008.1) Firefox/3.0.1

Explanation: Firefox 3.0.1 on Mandriva 2008.1. String from Jake Wasdin - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9) Gecko/2008052906 Firefox/3.0

Explanation: Firefox 3.0 on Windows XP. String from Mike Michaelson and Gary Pustizzi - thanks.

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9b5) Gecko/2008050509 Firefox/3.0b5

Explanation: OK so its not a release but the GrandParadiso/Minefield tags are dropped in favour of straight Firefox. Firefox 3.0 beta 5 on Ubuntu Hardy Heron (8.04 LTS) on an Acer laptop. String from John Murphy - thanks.

Releases - v2 Series

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.1.14) Gecko/20080612 Fedora/2.0.0.14-20080612.fc8.acer Firefox/2.0.0.14

Explanation: Firefox 2.0.0.14 on Acer Aspire - visible in string. String from Jonathan McCormack - thanks.

Mozilla/5.0 (X11; U; OpenBSD i386; en-US; rv:1.8.1.14) Gecko/20080821 Firefox/2.0.0.14

Explanation: Firefox 2.0.0.14 on BSD Anywhere 4.3 (OpenBSD live CD). String from Jake Wasdin - thanks.

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.1.13) Gecko/20080208 Mandriva/2.0.0.13-1mdv2008.1 (2008.1) Firefox/2.0.0.13

Explanation: Firefox 2.0.0.13 included with Mandriva 2008.1 Spring. String from Jake Wasdin - thanks.

Mozilla/5.0 (X11; U; Linux x86_64; sv-SE; rv:1.8.1.12) Gecko/20080207 Ubuntu/7.10 (gutsy) Firefox/2.0.0.12

Explanation: Firefox 2.0.0.12 on running on 64bit Ubuntu 7.10. String from Joar Bagge - thanks.

Mozilla/5.0 (X11; U; SunOS sun4u; en-US; rv:1.8.1.11) Gecko/20080118 Firefox/2.0.0.11

Explanation: Firefox V.2.0.0.11 on Solaris 10 (UltraSparc). String from Milan Kupcevic - thanks.

Mozilla/5.0 (X11; U; Linux i686; en-GB; rv:1.8.1.11) Gecko/20071204 Ubuntu/7.10 (gutsy) Firefox/2.0.0.11

Explanation: Firefox V.2.0.0.11 for Ubuntu Linux 7.10 Gutsy. String from Bilal Khan - thanks.

Mozilla/5.0 (Windows; U; Windows NT 6.0; en-GB; rv:1.8.1.11) Gecko/20071127 Firefox/2.0.0.11

Explanation: Firefox 2.0.0.11 on Vista SP.27 (just joking it's only SP.13). String from Mike Brady - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.9)
 Gecko/20071025 Firefox/2.0.0.9

Explanation: Firefox 2.0.0.9 on XP. String from James Rourke - thanks.

Mozilla/5.0 (X11; U; FreeBSD i686; en-US; rv:1.8.1.9) 
 Gecko/20071025 Firefox/2.0.0.9

Explanation: Firefox 2.0.0.9 on FreeBSD (yipee). String from Julius Thyssen - thanks.

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.1.8) Gecko/20070914
   Mandriva/2.0.0.8-1mdv2008.0 (2008.0) Firefox/2.0.0.8

Explanation: Firefox 2.0.0.8 running on Mandriva Linux Distribution 2008.0. String from Christoph Gröver - thanks.

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.1.7) Gecko/20070918 Firefox/2.0.0.7

Explanation: Jake writes: 'This is the default user agent string for the default web browser on Fluxbuntu 7.10-- Kazehakase 0.4.3. I guess they are trying to get through user agent sniffers that sniff for Firefox instead of Gecko.'. String from Jake Wasdin - thanks.

Mozilla/5.0 (Windows; U; WinNT3.51; en-US; rv:1.8.1.7) Gecko/20070914 Firefox/2.0.0.7

Explanation: Firefox 2.0.0.7 on Windows NT 3.51 - according to Nathan "Have to delete a couple of component JS files related to phishing detection to make it start without freezing, but it works and is usable!" - wow. String from Nathan Lineback - thanks.

Mozilla/5.0 (BeOS; U; BeOS BePC; en-US; rv:1.8.1.7)
 Gecko/20070917 BonEcho/2.0.0.7

Explanation: Firefox 2.0.0.7 on BeOS - apparently BonEcho must be used instead of Firefox 'cos of name disputes. String from Nathan Lineback - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US;
 rv:1.8.1.7) Gecko/20070914 Firefox/2.0.0.7

Explanation: Firefox 2.0.0.7 on Windows XP. String from Ray Waters - thanks.

Mozilla/5.0 (X11; U; FreeBSD i686; en-US; rv:1.8.1.6)
 Gecko/20070725 Firefox/2.0.0.6

Explanation: Firefox 2.0.0.6 on FreeBSD 6.2. String from Julius Thyssen - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; 
 rv:1.8.1.6) Gecko/20070725 Firefox/2.0.0.6

Explanation: Firefox 2.0.0.6 on XP. String from Jaqueline Boakye - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.4) Gecko/20070515 Firefox/2.0.0.4

Explanation: Firefox 2.0.0.4 Windows XP. String from Vinny Glennon - thanks.

Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.8.1.4) Gecko/20061201 Firefox/2.0.0.4 (Ubuntu-feisty)

Explanation: Firefox 2.0.0.4 on 64-bit Ubuntu Linux Feisty Fawn (gotta love those names). String from Jon J - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.3) Gecko/20070309 Firefox/2.0.0.3

Explanation: Firefox 2.0.0.3 running on XP. String from David Ross - thanks.

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.1.2) Gecko/20070220 Firefox/2.0.0.2

Explanation: Firefox 2.0.0.2 on vanilla Linux 32-bit, standard Mozilla build. String from Jon J - thanks.

Mozilla/5.0 (X11; U; SunOS sun4u; en-US; rv:1.8.1.1) Gecko/20061228 Firefox/2.0.0.1

Explanation: Firefox 2.0.0.1 running on a Sun UltraSPARC system under Solaris 10. String from Jason Mayfield-Lewis - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.2; en-GB; rv:1.8.1) Gecko/20061010 Firefox/2.0

Explanation: Standard 32-bit Firefox 2.0 (release version) running on Windows XP 64-bit edition SP1. String from Jason Mayfield-Lewis - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.0; en-GB; rv:1.8.1) Gecko/20060918 Firefox/2.0

Explanation: Firefox 2.0 RC1 on windows 2000 (available from this location). String from Jospeh Christianson - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.0; en-GB; rv:1.8.1b2) Gecko/20060821 Firefox/2.0b2

Explanation: Firefox 2.0 beta 2 on windows 2000. String from Jospeh Christianson - thanks.

Releases - v1.5 Series

Mozilla/5.0 (X11; U; Darwin Power Macintosh; en-US; rv:1.8.0.12) Gecko/20070803 Firefox/1.5.0.12 Fink Community Edition

Explanation: Firefox 1.5.0.12 on Darwin 8.10.0 with with the Fink Community version. String from Tyler Stobbe - thanks.

Mozilla/5.0 (OS/2; U; Warp 4.5; en-US; rv:1.8.0.7) Gecko/20060915 Firefox/1.5.0.7

Explanation: Firefox 1.5.0.7 on OS/2 Warp 4. String from Richard Steiner - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.0.7) Gecko/20060909 Firefox/1.5.0.7

Explanation: Firefox 1.5.0.7 - XP SP2 on a Dell Optiplex GX280. String from Thomas Bradshaw - thanks.

Mozilla/5.0 (Windows; U; Windows NT 6.0; pt-BR; rv:1.8.0.7) Gecko/20060909 Firefox/1.5.0.7

Explanation: Firefox 1.5.0.7 Windows Vista Beta. String from Renan Birck - thanks.

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.0.5) Gecko/20060719 Firefox/1.5.0.5

Explanation: Firefox 1.5.0.5 on vanilla Linux, standard 32-bit Mozilla build. String from Jon J - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8.0.3) Gecko/20060426 Firefox/1.5.0.3

Explanation: Firefox 1.5.0.3 on ReactOS 0.3.0 (ReactOs is a project to create an OS binary compatible XP). String from Antony Jones - thanks.

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.0.6) Gecko/20060728 Firefox/1.5.0.6

Explanation: Firefox 1.5.0.6 on FC3 on Dell dimension B110. String from Bryan Quach - thanks.

Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.8.0.4) Gecko/20060508 Firefox/1.5.0.4

Explanation: Firefox 1.5.0.4 on OS X on the Mac. String from David Atkins - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9a1) Gecko/20060612 Minefield/3.0a1

Explanation: Latest development branch running on XP SP2 from this site. String from Luke B - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8.0.4) Gecko/20060508 Firefox/1.5.0.4

Explanation: Firefox 1.5.0.4 on Win 2K SP4. String from Tim Valdez - thanks.

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.0.4) Gecko/20060602 Firefox/1.5.0.4

Explanation: Firefox 1.5.0.4 on XP. String from John Lewis - thanks.

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.0.4) Gecko/20060602 Firefox/1.5.0.4

Explanation: Firefox 1.5.0.4 on AMD running a slackware Linux distro. String from Robert Darin - thanks.

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.0.3) Gecko/20061024 Oracle/1.5.0.3-0.3.EL4 Firefox/1.5.0.3 pango-text

Explanation: Firefox 1.5.0.3 on Oracle's Unbreakable Linux. String from Jonathan McCormack - thanks.

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.0.3) Gecko/20060425 SUSE/1.5.0.3-7 Firefox/1.5.0.31

Explanation: Firefox 1.5.0.31 on suSE 10.1. String from Suesh P.C. - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.0.2) Gecko/20060308 Firefox/1.5.0.2

Explanation: Firefox 1.5.0.2 on XP - latest and greatest. String from Marshall Kiker - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.0.1) Gecko/20060111 Firefox/1.5.0.1

Explanation: Firefox 1.5.0.1 on XP with SP2. String from Deyan Mavrov - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8) Gecko/20051111 Firefox/1.5

Explanation: Firefox 1.5 on Win2K. String from Stuart Langridge - thanks.

Mozilla/5.0 (X11; U; SunOS i86pc; en-US; rv:1.8) Gecko/20051130 Firefox/1.5

Explanation: Firefox 1.5 on Solaris. String from Bob Doolittle - thanks.

Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.8) Gecko/20051111 Firefox/1.5

Explanation: Firefox 1.5 on Mac OS X 10.4.4. String from Pavel Sochnev - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; pt-BR; rv:1.8) Gecko/20051111 Firefox/1.5

Explanation: Firefox 1.5 on XP SP2 Brazilian - Portugese version. String from Renan Birk - thanks.

Releases - v1 Series

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.13) Gecko/20060410 Firefox/1.0.8

Explanation: Firefox 1.0.8 on XP as part of the portableapps suite. String from Rafael Holt - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.2; en-US; rv:1.7.12) Gecko/20050915 Firefox/1.0.7 (ax)

Explanation: Firefox 1.0.7 on MS Advanced Server on a 64 bit thingy. String from Sean Cheshire - thanks.

Mozilla/5.0 (X11; U; Linux sparc64; en-US; rv:1.7.12) Gecko/20051105 Firefox/1.0.7

Explanation: Firefox 1.0.7 on Linux on a SPARC-54. String from Chance Platt - thanks.

Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.7.12) Gecko/20051105 Firefox/1.0.7

Explanation: Firefox 1.0.7 on FreeBSD 5.4. String from Edwin Chambers - thanks.

Mozilla/5.0 (OS/2; U; Warp 4.5; en-US; rv:1.7.12) Gecko/20050922 Firefox/1.0.7

Explanation: Firefox 1.0.7 on a version OS Warp from ecomstation/. String from Jonathan McCormack - thanks.

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.12) Gecko/20050922 Firefox/1.0.7 (Ubuntu package 1.0.7)

Explanation: Firefox 1.0.7 on the PC Ubuntu distro of Linux (kernel 2.6.10-5. String from Jason Allberry - thanks.

Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.7.12) Gecko/20050915 Firefox/1.0.7

Explanation: Firefox 1.0.7 on the Mac with OS X. Well the software may be changing fast but they have stuck with the name Firefox for a while now (seriously - still a great browser). String from Zonjai Nezba - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.12) Gecko/20050915 Firefox/1.0.7

Explanation: Juts to prove that Firefox also runs on less exotic hardware and software this is Firefox 1.0.7 on XP (you know - the one with BIG patches) . String from Leeroy Hendricks - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; pt-BR; rv:1.7.10) Gecko/20050717 Firefox/1.0.6

Explanation: A brazilian Version 1.0.6 on Windows XP. String from Renan Birck - thanks.

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.10) Gecko/20050925 Firefox/1.0.4 (Debian package 1.0.4-2sarge5)

Explanation: Version 1.0.4 on Debian GNU/Linux 3.1 (a.k.a. Sarge), which shows the deb package it came from, as found in the 'general.useragent.vendorComment' field in the 'about:config' URL for Firefox 1.0.4. String from Colby Waley - thanks.

Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.7.8) Gecko/20050511 Firefox/1.0.4

Explanation: Version 1.0.4 on the Mac. String from Stephen Paulsen - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.8) Gecko/20050511 Firefox/1.0.4 (ax)

Explanation: Version 1.0.4 with Windows Media ActiveX Control. String from Dennis Henderson - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.0; en-GB; rv:1.7.8) Gecko/20050418 Firefox/1.0.4

Explanation: Starting to come thick and fast now - version 1.04 (current Release is 1.0.3). String from Anon - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7.6) Gecko/20050317 Firefox/1.0.2

Explanation: Release version of Firefox 1.0.2 on March 23rd 2005. String from Dexter Ang - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7.6) Gecko/20050224 Firefox/1.0.2

Explanation: Early sighting of Firefox 1.0.2 from aviary nightly builds. String from Joseph Christianson - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8b2) Gecko/20050224 Firefox/1.0+

Explanation: Firefox 1.0+ to quote from Joseph "Aside from the general release line (currently in the 1.0.x line) there is also the simultaneous trunk development on the 1.8b2 core that currently carries the 1.0+ designation". String from Joseph Christianson - thanks.

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8b3) Gecko/20050712 Firefox/1.0+

Explanation: Firefox 1.0+ trunk build of Deer Park Alpha 2 (quaint name). String from Asbjørn Pedersen - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.0; en-GB; rv:1.7.6) Gecko/20050222 Firefox/1.0.1

Explanation: Firefox 1.0.1 - the first update based on Moz 1.7.6 - Windows 2K. String from Joseph Christianson - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7.5) Gecko/20050207 Firefox/1.0.1

Explanation: Firefox 1.0.1 - customized nightly build - Windows 2K. String from anonymous - thanks whoever you are.

Mozilla/5.0 (SkyOS; U; Intel x86; en-US; rv:1.7.5) Gecko/20061024 Firefox/1.0

Explanation: Firefox 1.0 running under SkyOS. String from Jonathan McCormack - thanks.

Mozilla/5.0 (X11; U; SunOS sun4u; en-US; rv:1.7.5) Gecko/20041109 Firefox/1.0

Explanation: Firefox 1.0 - Firefox 1.0 running on a dual CPU Sun Ultra60 with Elite3D-m6 gfx under Solaris 10. String from Michael Dolye - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.2; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0

Explanation: Firefox 1.0 - running on XP64 (build 3790 c. 1218). String from Eugene Sadhu - thanks.

Mozilla/5.0 (Windows; U; Win95; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0

Explanation: Firefox 1.0 - running on Win 95. Not officially supported but clearly works according to Andrew as long as you update some libraries. String from Andrew Turnbull - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.2; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0

Explanation: Firefox 1.0 Final release Nov 8, 2004 - Running on Win XP64 no less. String from Sean Cheshire - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0

Explanation: Firefox 1.0 Final release Nov 8, 2004 - Running on Win XP Pro SP2. String from Dennis Henderson, Douglas Mosman, Jonathan Walker and Jeff Conrad - thanks.

Releases - Pre v1

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7) Gecko/20041122 Firefox/0.5.6+

Explanation: Interesting oddity. A Netscape prototype of a browser based on Firefox info here though you have to register. Apparently no longer available? String from Louise McCormack - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7) Gecko/20040815 Firefox/0.8 (MOOX M3)

Explanation: Customised build (optimised for speed and stability) of Firefox on XP Pro. String from Erik Bolsø - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; rv:1.7.3) Gecko/20040913 Waterunicorn/0.10 StumbleUpon/1.998

Explanation: Customised Firefox from Cosmic Cat on XP Pro. This one changes the browser name every time it hits a page - we thought Firefox .. or is that Firebird .. Phoenix... etc., etc.. were doing a pretty good job on their own. With stumbleupon toolbar. String from Erik Bolsø - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.3) Gecko/20041002 Firefox/0.10.1

Explanation: Latest Win-32 Firefox on XP Pro. This is the one that fixes the security problem. String from Anders Pedersen - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.3) Gecko/20041002 Firefox/0.10

Explanation: Latest Win-32 Firefox on XP Pro comes complete with a security problem. String from Anders Pedersen - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; rv:1.7.3) Gecko/20040913 Spacebug/0.10 (aka Firefox/0.10)

Explanation: Latest Firefox with extension from Cosmic Cat Creations. String from Ignasi Peiro - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; rv:1.7.3) Gecko/20040913 Firefox/0.10

Explanation: Very strange numbering should be 1.0 surely?. Erik also observes they dropped the language code - maybe they are going to change the name again!! String from Erik Inge Bolsø - thanks.

Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.6) Gecko/20040206 Firefox/0.8

Explanation: Out of order FireFox 0.8 - but on a MAC! - we guess that OS X allows MAC guys standard *nix browser choices. String from Erik Inge Bolsø - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7) Gecko/20040803 Firefox/0.9.3

Explanation: Standard Firefox 0.9.3. String from Zaek Jenkinson - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7) Gecko/20040707 Firefox/0.9.2 StumbleUpon/1.998

Explanation: Standard Firefox but with stumbleupon toolbar. String from Erik Inge Bolsø - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.0; de-DE; rv:1.7) Gecko/20040707 Firefox/0.9.2

Explanation: Version of FireFox 0.9.2 - another oopsy version upgrade in german this time (fixes the gottchas), Gecko 1.7 engine on Win2K. String from Erik Inge Bolsø - thanks.

Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.7) Gecko/20040630 Firefox/0.9.1

Explanation: Version of FireFox 0.9.1 - much improved version (in our language - fixes the gottchas), Gecko 1.7 engine on FreeBSD (yipee). String from Edwin Chambers - thanks.

Mozilla/5.0 (X11; U; NetBSD i386; en-GB; rv:1.7) Gecko/20040708 Firefox/0.9.1

Explanation: Version of FireFox 0.9.1 (this is the one that fixes the gottchas), Gecko 1.7 engine on NetBSD (hurrah) on AMD Athlon/Thunderbird. String from Alex Poylisher - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7) Gecko/20040626 Firefox/0.9.1

Explanation: Version of FireFox 0.9.1 (this is the one that fixes the gottchas), Gecko 1.7 engine on Win2K. String from Anders Pedersen - thanks.

Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.7) Gecko/20040619 Firefox/0.9

Explanation: FireFox 0.9. but with Gecko 1.7 engine on FreeBSD. String from Edwin Chambers - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7) Gecko/20040614 Firefox/0.9

Explanation: FireFox 0.9. but with Gecko 1.7 engine (see below) on Microsoft Windows XP Pro. String from Frank Spychaj - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8a) Gecko/20040416 Firefox/0.8.0+

Explanation: One of the Firefox nightly builds with a Gecko 1.8 engine on Microsoft Windows 2000 Pro 5.00.2195 SP4. String from Anders Pedersen (a brave guy taking nightly builds) - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.6) Gecko/20040206 Firefox/0.8 Mnenhy/0.6.0.103

Explanation: FireFox 0.8 on XP - but with an oddball extension. String from Erik Inge Bolsø - thanks.

Mozilla/5.0 (X11; U; Linux i686; de-DE; rv:1.6) Gecko/20040207 Firefox/0.8

Explanation: Smokin' Hot from the Mozilla press on the day of release. Firebird (Mozilla's new browser) version 0.8 (latest and greatest) on Linux (distro SuSE 8.2) this the english language version with a german language preference. String from Erik - thanks.

Mozilla/5.0 (Windows; U; Windows NT 5.1; fr; rv:1.5) Gecko/20031007 Firebird/0.7

Explanation: Firebird (Mozilla's new browser) version 0.7 (latest and greatest) on XP this the french language version. String from Christophe Agathon - nous vous remercions.

Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.5) Gecko/20031023 Firebird/0.7

Explanation: Firebird (Mozilla's new browser) version 0.7 (latest and greatest) on FreeBSD 5.1 (latest and greatest). String from Andreas Kohn - thanks.

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.5a) Gecko/20031002 Mozilla Firebird/0.6.1

Explanation: Firebird version 0.6.1 on Debian 3.0 Woody. String from Philippe Bechamp - thanks.

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4b) Gecko/20030516 Mozilla Firebird/0.6

Explanation: Firebird (Mozilla's new browser) version 0.6 on Mandrake Linux 9.0. String from Andrew Preater - thanks.

Mozilla/5.0 (X11; U; SunOS sun4m; en-US; rv:1.4b) Gecko/20030517 Mozilla Firebird/0.6

Explanation: Firebird 0.6 running on a SPARCstation 20 (note sun4m) under Solaris 8. String from Michael Doyle - thanks.

Mozilla/5.0 (X11; U; SunOS sun4m; en-US; rv:1.4b) Gecko/20030517 Mozilla Firebird/0.6

Explanation: Firebird 0.6 running on a Sun SPARCstation 20 w. 2 200MHZ HyperSPARC procs. under Sol 2.8 1/01. String from Michael Doyle - thanks.

Mozilla/5.0 (Windows; U; WinNT4.0; en-US; rv:1.3a) Gecko/20021207 Phoenix/0.5

Explanation: Phoenix (Mozilla lite) version 0.5 on Windows NT 4.0

Mozilla/5.0 (Windows; U; WinNT4.0; en-US; rv:1.2b) Gecko/20021001 Phoenix/0.2

Explanation: Phoenix (Mozilla lite) version 0.2 on Windows NT 4.0

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.2b) Gecko/20020923 Phoenix/0.1

Explanation: Phoenix (Mozilla lite) version 0.1 on Windows XP



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