| Used Operating Systems |
| 1 | 23126 | 36.78 | 9842 | 81.40 | +http://ahrefs.com/robot/ |
| 2 | 18332 | 29.16 | 139 | 1.15 | http://mj12bot.com/ |
| 3 | 7410 | 11.79 | 39 | 0.32 | http://www.majestic12.co.uk/bot.php?+ |
| 4 | 4558 | 7.25 | 571 | 4.72 | Windows NT |
| 5 | 3004 | 4.78 | 3 | 0.02 | +http://OpenLinkProfiler.org/bot |
| 6 | 2986 | 4.75 | 12 | 0.10 | +http://siteexplorer.info/Backlink-Check... |
| 7 | 1335 | 2.12 | 1063 | 8.79 | +http://www.baidu.com/search/spider.html |
| 8 | 678 | 1.08 | 34 | 0.28 | +http://www.google.com/bot.html |
| 9 | 342 | 0.54 | 71 | 0.59 | +http://yandex.com/bots |
| 10 | 327 | 0.52 | 75 | 0.62 | +http://www.bing.com/bingbot.htm |
| 11 | 323 | 0.51 | 85 | 0.70 | +http://www.linkdex.com/bots/ |
| 12 | 216 | 0.34 | 39 | 0.32 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 13 | 67 | 0.11 | 18 | 0.15 | http://help.yahoo.com/help/us/ysearch/sl... |
| 14 | 26 | 0.04 | 2 | 0.02 | https://www.dataprovider.com/spider/ |
| 15 | 25 | 0.04 | 15 | 0.12 | Windows 98 |
| 16 | 19 | 0.03 | 19 | 0.16 | Windows 95 |
| 17 | 14 | 0.02 | 2 | 0.02 | crawler@mixrank.com |
| 18 | 10 | 0.02 | 5 | 0.04 | Windows XP |
| 19 | 10 | 0.02 | 4 | 0.03 | +http://www.exabot.com/go/robot |
| 20 | 9 | 0.01 | 9 | 0.07 | MSIE 5.5; Windows NT 4.0 |
| 21 | 8 | 0.01 | 4 | 0.03 | +http://www.seodiver.com/bot |
| 22 | 8 | 0.01 | 7 | 0.06 | Windows 3.1 |
| 23 | 7 | 0.01 | 7 | 0.06 | Windows ME |
| 24 | 6 | 0.01 | 6 | 0.05 | Windows 2000 |
| 25 | 4 | 0.01 | 4 | 0.03 | +http://8pw.ru/virus |
| 26 | 4 | 0.01 | 4 | 0.03 | ) - BrowseX (2.0.0 Windows |
| 27 | 4 | 0.01 | 0 | 0.00 | http://filterdb.iss.net/crawler/ |
| 28 | 3 | 0.00 | 3 | 0.02 | Windows CE |
| 29 | 3 | 0.00 | 3 | 0.02 | MSIE 5.5; Windows NT 5.0 |
| 30 | 2 | 0.00 | 2 | 0.02 | Auto; Windows |
| 31 | 2 | 0.00 | 0 | 0.00 | Wayback Machine Live Record; +http://arc... |
| 32 | 2 | 0.00 | 2 | 0.02 | +info@netcraft.com |
| 33 | 2 | 0.00 | 2 | 0.02 | FreeBSD [unknown version] |
