| Used Operating Systems |
| 1 | 5024 | 47.06 | 1328 | 34.46 | Windows NT |
| 2 | 1867 | 17.49 | 1719 | 44.60 | +http://www.baidu.com/search/spider.html |
| 3 | 803 | 7.52 | 42 | 1.09 | +http://yandex.com/bots |
| 4 | 602 | 5.64 | 159 | 4.13 | help@moz.com |
| 5 | 568 | 5.32 | 168 | 4.36 | +http://www.google.com/bot.html |
| 6 | 497 | 4.66 | 166 | 4.31 | +http://www.bing.com/bingbot.htm |
| 7 | 310 | 2.90 | 3 | 0.08 | +http://OpenLinkProfiler.org/bot |
| 8 | 249 | 2.33 | 39 | 1.01 | http://www.majestic12.co.uk/bot.php?+ |
| 9 | 141 | 1.32 | 62 | 1.61 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 10 | 94 | 0.88 | 22 | 0.57 | +http://www.exabot.com/go/robot |
| 11 | 88 | 0.82 | 12 | 0.31 | http://help.yahoo.com/help/us/ysearch/sl... |
| 12 | 75 | 0.70 | 21 | 0.54 | +http://fulltext.sblog.cz/ |
| 13 | 57 | 0.53 | 23 | 0.60 | Windows 95 |
| 14 | 40 | 0.37 | 15 | 0.39 | +http://www.easou.com/search/spider.html |
| 15 | 35 | 0.33 | 3 | 0.08 | http://www.searchmetrics.com/en/searchme... |
| 16 | 35 | 0.33 | 10 | 0.26 | Windows 98 |
| 17 | 32 | 0.30 | 16 | 0.42 | +http://www.career-x.de/bot.html |
| 18 | 25 | 0.23 | 5 | 0.13 | +http://www.profound.net/urlappendbot.ht... |
| 19 | 15 | 0.14 | 5 | 0.13 | ) - BrowseX (2.0.0 Windows |
| 20 | 12 | 0.11 | 2 | 0.05 | Windows 2000 |
| 21 | 12 | 0.11 | 4 | 0.10 | Windows 3.1 |
| 22 | 10 | 0.09 | 5 | 0.13 | http://crawler.sistrix.net/ |
| 23 | 9 | 0.08 | 3 | 0.08 | Windows CE |
| 24 | 9 | 0.08 | 3 | 0.08 | MSIE 5.5; Windows NT 4.0 |
| 25 | 8 | 0.07 | 2 | 0.05 | ScoutJet; +http://blekko.com/about/blekk... |
| 26 | 8 | 0.07 | 4 | 0.10 | +http://www.grapeshot.co.uk/crawler.php |
| 27 | 6 | 0.06 | 2 | 0.05 | Auto; Windows |
| 28 | 6 | 0.06 | 0 | 0.00 | Wayback Machine Live Record; +http://arc... |
| 29 | 6 | 0.06 | 2 | 0.05 | Windows XP |
| 30 | 6 | 0.06 | 2 | 0.05 | Windows ME |
| 31 | 4 | 0.04 | 0 | 0.00 | Macintosh PPC |
| 32 | 4 | 0.04 | 3 | 0.08 | +info@netcraft.com |
| 33 | 3 | 0.03 | 0 | 0.00 | Win32 |
| 34 | 3 | 0.03 | 0 | 0.00 | Linux 2.4.x |
| 35 | 3 | 0.03 | 1 | 0.03 | WinHttp.WinHttpRequest.5 |
| 36 | 2 | 0.02 | 0 | 0.00 | http://desktop.google.com/ |
| 37 | 2 | 0.02 | 0 | 0.00 | Windows 9. |
| 38 | 2 | 0.02 | 0 | 0.00 | PPC Mac OS X Mach-O |
| 39 | 2 | 0.02 | 1 | 0.03 | MSIE 5.5; Windows 95 |
| 40 | 1 | 0.01 | 1 | 0.03 | +http://emefge.de/bot.html |
| 41 | 1 | 0.01 | 1 | 0.03 | FreeBSD [unknown version] |
