| Used Operating Systems |
| 1 | 5997 | 46.58 | 1971 | 31.09 | Windows NT |
| 2 | 3075 | 23.89 | 2838 | 44.76 | +http://www.baidu.com/search/spider.html |
| 3 | 678 | 5.27 | 301 | 4.75 | http://www.majestic12.co.uk/bot.php?+ |
| 4 | 583 | 4.53 | 182 | 2.87 | +http://www.bing.com/bingbot.htm |
| 5 | 504 | 3.91 | 15 | 0.24 | +http://ahrefs.com/robot/ |
| 6 | 380 | 2.95 | 141 | 2.22 | +http://www.google.com/bot.html |
| 7 | 331 | 2.57 | 82 | 1.29 | +http://yandex.com/bots |
| 8 | 218 | 1.69 | 218 | 3.44 | http://www.yodao.com/help/webmaster/spid... |
| 9 | 214 | 1.66 | 174 | 2.74 | Windows 95 |
| 10 | 173 | 1.34 | 15 | 0.24 | http://help.yahoo.com/help/us/ysearch/sl... |
| 11 | 99 | 0.77 | 37 | 0.58 | Windows 98 |
| 12 | 66 | 0.51 | 49 | 0.77 | Windows 3.1 |
| 13 | 59 | 0.46 | 29 | 0.46 | ezooms.bot@gmail.com |
| 14 | 53 | 0.41 | 50 | 0.79 | Windows CE |
| 15 | 52 | 0.40 | 45 | 0.71 | Windows 2000 |
| 16 | 51 | 0.40 | 5 | 0.08 | Intel Mac OS X 10.6 |
| 17 | 46 | 0.36 | 23 | 0.36 | +http://www.career-x.de/bot.html |
| 18 | 41 | 0.32 | 39 | 0.62 | MSIE 5.5; Windows NT 5.0 |
| 19 | 37 | 0.29 | 22 | 0.35 | Windows XP |
| 20 | 35 | 0.27 | 30 | 0.47 | Windows ME |
| 21 | 34 | 0.26 | 2 | 0.03 | +http://filterdb.iss.net/crawler/ |
| 22 | 34 | 0.26 | 29 | 0.46 | MSIE 5.5; Windows NT 4.0 |
| 23 | 30 | 0.23 | 10 | 0.16 | http://crawler.sistrix.net/ |
| 24 | 18 | 0.14 | 8 | 0.13 | +http://www.acoon.de/robot.asp |
| 25 | 17 | 0.13 | 3 | 0.05 | Linux i686 [unknown version] |
| 26 | 14 | 0.11 | 7 | 0.11 | +http://www.exabot.com/go/robot |
| 27 | 8 | 0.06 | 3 | 0.05 | +http://www.seoprofiler.com/bot |
| 28 | 6 | 0.05 | 4 | 0.06 | +http://tweetmeme.com/ |
| 29 | 5 | 0.04 | 1 | 0.02 | +http://www.compspy.com/spider.html |
| 30 | 4 | 0.03 | 2 | 0.03 | ) - BrowseX (2.0.0 Windows |
| 31 | 4 | 0.03 | 2 | 0.03 | +http://discoveryengine.com/discoverybot... |
| 32 | 2 | 0.02 | 0 | 0.00 | http://desktop.google.com/ |
| 33 | 2 | 0.02 | 1 | 0.02 | http://www.botje.com/plukkie.htm |
| 34 | 2 | 0.02 | 1 | 0.02 | +info@netcraft.com |
| 35 | 1 | 0.01 | 1 | 0.02 | Linux [unknown version] |
| 36 | 1 | 0.01 | 0 | 0.00 | +http://shoulu.jike.com/spider.html |
