| Used Operating Systems |
| 1 | 28485 | 43.23 | 190 | 2.31 | http://www.majestic12.co.uk/bot.php?+ |
| 2 | 7084 | 10.75 | 773 | 9.41 | Windows NT |
| 3 | 6582 | 9.99 | 1 | 0.01 | +http://megaindex.com/crawler |
| 4 | 6346 | 9.63 | 4651 | 56.62 | +http://ahrefs.com/robot/ |
| 5 | 3977 | 6.04 | 6 | 0.07 | Windows XP |
| 6 | 3801 | 5.77 | 4 | 0.05 | +http://OpenLinkProfiler.org/bot |
| 7 | 3761 | 5.71 | 148 | 1.80 | +http://www.semrush.com/bot.html |
| 8 | 2334 | 3.54 | 1864 | 22.69 | +http://www.baidu.com/search/spider.html |
| 9 | 1216 | 1.85 | 4 | 0.05 | +http://webmeup-crawler.com/ |
| 10 | 898 | 1.36 | 114 | 1.39 | +http://www.bing.com/bingbot.htm |
| 11 | 297 | 0.45 | 92 | 1.12 | +http://www.google.com/bot.html |
| 12 | 194 | 0.29 | 57 | 0.69 | http://help.yahoo.com/help/us/ysearch/sl... |
| 13 | 164 | 0.25 | 20 | 0.24 | +http://fulltext.sblog.cz/ |
| 14 | 154 | 0.23 | 52 | 0.63 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 15 | 130 | 0.20 | 63 | 0.77 | +http://yandex.com/bots |
| 16 | 114 | 0.17 | 3 | 0.04 | +http://filterdb.iss.net/crawler/ |
| 17 | 83 | 0.13 | 31 | 0.38 | +http://www.linkdex.com/bots/ |
| 18 | 74 | 0.11 | 70 | 0.85 | +http://www.xovibot.net/ |
| 19 | 55 | 0.08 | 14 | 0.17 | Windows 95 |
| 20 | 27 | 0.04 | 12 | 0.15 | +http://www.exabot.com/go/robot |
| 21 | 21 | 0.03 | 19 | 0.23 | +http://www.uptime.com/uptimebot |
| 22 | 18 | 0.03 | 5 | 0.06 | MSIE 5.5; Windows NT 5.0 |
| 23 | 15 | 0.02 | 5 | 0.06 | MSIE 5.5; Windows NT 4.0 |
| 24 | 12 | 0.02 | 1 | 0.01 | Windows 98 |
| 25 | 10 | 0.02 | 1 | 0.01 | crawler@mixrank.com |
| 26 | 9 | 0.01 | 3 | 0.04 | Windows 3.1 |
| 27 | 7 | 0.01 | 2 | 0.02 | Windows ME |
| 28 | 4 | 0.01 | 1 | 0.01 | Windows CE |
| 29 | 2 | 0.00 | 1 | 0.01 | Windows 2000 |
| 30 | 2 | 0.00 | 0 | 0.00 | Wayback Machine Live Record; +http://arc... |
| 31 | 2 | 0.00 | 2 | 0.02 | Linux [unknown version] |
| 32 | 2 | 0.00 | 0 | 0.00 | +http://www.domainoptima.com/robot |
| 33 | 2 | 0.00 | 2 | 0.02 | +info@netcraft.com |
| 34 | 2 | 0.00 | 1 | 0.01 | +http://www.meanpath.com/meanpathbot.htm... |
| 35 | 1 | 0.00 | 1 | 0.01 | +http://www.domaintuno.com/robot |
| 36 | 1 | 0.00 | 1 | 0.01 | +http://www.privacyaware.org |
