| Used Operating Systems |
| 1 | 5096 | 35.59 | 1614 | 42.90 | Windows NT |
| 2 | 4668 | 32.60 | 89 | 2.37 | http://www.majestic12.co.uk/bot.php?+ |
| 3 | 854 | 5.96 | 475 | 12.63 | +http://www.google.com/bot.html |
| 4 | 792 | 5.53 | 300 | 7.97 | +http://www.bing.com/bingbot.htm |
| 5 | 766 | 5.35 | 525 | 13.96 | +http://www.baidu.com/search/spider.html |
| 6 | 656 | 4.58 | 407 | 10.82 | +http://ahrefs.com/robot/ |
| 7 | 557 | 3.89 | 51 | 1.36 | +http://yandex.com/bots |
| 8 | 239 | 1.67 | 72 | 1.91 | +http://www.linkdex.com/bots/ |
| 9 | 228 | 1.59 | 94 | 2.50 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 10 | 86 | 0.60 | 31 | 0.82 | http://www.opensiteexplorer.org/dotbot, ... |
| 11 | 75 | 0.52 | 17 | 0.45 | http://help.yahoo.com/help/us/ysearch/sl... |
| 12 | 52 | 0.36 | 3 | 0.08 | http://crawler.sistrix.net/ |
| 13 | 44 | 0.31 | 16 | 0.43 | +http://www.semrush.com/bot.html |
| 14 | 38 | 0.27 | 2 | 0.05 | +http://advbot.net/bot.html |
| 15 | 38 | 0.27 | 4 | 0.11 | Windows 98 |
| 16 | 19 | 0.13 | 1 | 0.03 | +http://OpenLinkProfiler.org/bot |
| 17 | 19 | 0.13 | 18 | 0.48 | Windows 95 |
| 18 | 12 | 0.08 | 2 | 0.05 | +http://www.profound.net/domainappender |
| 19 | 9 | 0.06 | 0 | 0.00 | WinHttp.WinHttpRequest.5 |
| 20 | 8 | 0.06 | 1 | 0.03 | +http://fulltext.sblog.cz/ |
| 21 | 6 | 0.04 | 6 | 0.16 | +http://www.domaintuno.com/robot |
| 22 | 6 | 0.04 | 2 | 0.05 | +http://trumpetsheetmusic.org |
| 23 | 6 | 0.04 | 3 | 0.08 | +http://www.meanpath.com/meanpathbot.htm... |
| 24 | 6 | 0.04 | 3 | 0.08 | +http://duckduckgo.com |
| 25 | 5 | 0.03 | 5 | 0.13 | Windows CE |
| 26 | 5 | 0.03 | 3 | 0.08 | +http://www.exabot.com/go/robot |
| 27 | 4 | 0.03 | 2 | 0.05 | Windows XP |
| 28 | 4 | 0.03 | 2 | 0.05 | Linux i686 [unknown version] |
| 29 | 3 | 0.02 | 3 | 0.08 | Windows 2000 |
| 30 | 3 | 0.02 | 2 | 0.05 | X11 |
| 31 | 3 | 0.02 | 3 | 0.08 | MSIE 5.5; Windows NT 4.0 |
| 32 | 2 | 0.01 | 1 | 0.03 | +http://www.domainoptima.com/robot |
| 33 | 2 | 0.01 | 2 | 0.05 | Windows ME |
| 34 | 2 | 0.01 | 2 | 0.05 | Windows 3.1 |
| 35 | 2 | 0.01 | 0 | 0.00 | PPC Mac OS X Mach-O |
| 36 | 2 | 0.01 | 0 | 0.00 | http://filterdb.iss.net/crawler/ |
| 37 | 1 | 0.01 | 1 | 0.03 | +http://meta.stackoverflow.com/q/130398 |
