| User Agent | Client Version | Operating System | OS Version | Language |
| Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:2.0b5pre) Gecko/20100819 Minefield/4.0b5pre | 4.0b5pre | Mac OS X | 10.6 | en |
| Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:2.0b5pre) Gecko/20100824 Minefield/4.0b5pre | 4.0b5pre | Mac OS X | 10.6 | en |
| Mozilla/5.0 (Windows NT 5.1; rv:2.0b5pre) Gecko/20100823 AskTbPTV2/3.9.1.14019 Minefield/4.0b5pre | 4.0b5pre | Windows | xp | en |
| Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:2.0b4pre) Gecko/20100817 Minefield/4.0b4pre | 4.0b4pre | Mac OS X | 10.6 | en |
| Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:2.0b3pre) Gecko/20100723 Minefield/4.0b3pre | 4.0b3pre | Mac OS X | 10.6 | en |
| Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:2.0b2pre) Gecko/20100701 Minefield/4.0b2pre | 4.0b2pre | Mac OS X | 10.6 | en |
| Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; en-US; rv:2.0b2pre) Gecko/20100706 Minefield/4.0b2pre | 4.0b2pre | Mac OS X | 10.6 | en |
| Mozilla/5.0 (Macintosh; Intel Mac OS X 10.5; en-US; rv:2.0b2pre) Gecko/20100712 Minefield/4.0b2pre | 4.0b2pre | Mac OS X | 10.5 | en |
| Mozilla/5.0 (X11; U; Linux i686; en-US; rv:2.0a1pre) Gecko/2008060602 Minefield/4.0a1pre | 4.0a1pre | Linux | en | |
| Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:2.0a1pre) Gecko/2008032002 Minefield/4.0a1pre | 4.0a1pre | Windows | vista | en |
| Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:2.0a1pre) Gecko/2008032902 Minefield/4.0a1pre | 4.0a1pre | Windows | xp | en |
| Mozilla/5.0 (Windows; U; Windows NT 5.2; en-US; rv:2.0a1pre) Gecko/2008060303 Minefield/4.0a1pre | 4.0a1pre | Windows | xp | en |
| Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.3a6pre) Gecko/20100617 Minefield/3.7a6pre | 3.7a6pre | Mac OS X | 10.6 | en |
| Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.3a5pre) Gecko/20100410 Minefield/3.7a5pre | 3.7a5pre | Windows | 7 | en |
| Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.3a5pre) Gecko/20100514 Minefield/3.7a5pre | 3.7a5pre | Mac OS X | 10.6 | en |
| Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.3a5pre) Gecko/20100525 Minefield/3.7a5pre | 3.7a5pre | Mac OS X | 10.6 | en |
| Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.3a5pre) Gecko/20100605 Minefield/3.7a5pre | 3.7a5pre | Mac OS X | 10.6 | en |
| Mozilla/5.0 (Windows; U; Windows NT 5.2; Win64; x64; en-US; rv:1.9.3a5pre) Gecko/20100514 Minefield/3.7a5pre | 3.7a5pre | Windows | xp | en |
| Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.3a4pre) Gecko/20100316 Minefield/3.7a4pre | 3.7a4pre | Mac OS X | 10.6 | en |
| Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.3a4pre) Gecko/20100331 Minefield/3.7a4pre | 3.7a4pre | Mac OS X | 10.6 | en |