| Used Operating Systems |
| 1 | 30630 | 40.52 | 266 | 2.15 | http://www.majestic12.co.uk/bot.php?+ |
| 2 | 19383 | 25.64 | 1037 | 8.40 | Windows NT |
| 3 | 9194 | 12.16 | 6704 | 54.29 | +http://ahrefs.com/robot/ |
| 4 | 4005 | 5.30 | 4 | 0.03 | +http://OpenLinkProfiler.org/bot |
| 5 | 3447 | 4.56 | 1 | 0.01 | +http://megaindex.com/crawler |
| 6 | 3069 | 4.06 | 2417 | 19.57 | +http://www.baidu.com/search/spider.html |
| 7 | 2184 | 2.89 | 430 | 3.48 | +http://yandex.com/bots |
| 8 | 2174 | 2.88 | 806 | 6.53 | +http://www.google.com/bot.html |
| 9 | 431 | 0.57 | 244 | 1.98 | +http://www.bing.com/bingbot.htm |
| 10 | 336 | 0.44 | 71 | 0.57 | +http://www.linkdex.com/bots/ |
| 11 | 164 | 0.22 | 56 | 0.45 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 12 | 85 | 0.11 | 67 | 0.54 | Windows 95 |
| 13 | 67 | 0.09 | 20 | 0.16 | Windows XP |
| 14 | 61 | 0.08 | 24 | 0.19 | Windows 98 |
| 15 | 54 | 0.07 | 27 | 0.22 | +http://www.exabot.com/go/robot |
| 16 | 39 | 0.05 | 20 | 0.16 | http://help.yahoo.com/help/us/ysearch/sl... |
| 17 | 32 | 0.04 | 16 | 0.13 | +http://duckduckgo.com |
| 18 | 27 | 0.04 | 26 | 0.21 | +http://www.uptime.com/uptimebot |
| 19 | 24 | 0.03 | 2 | 0.02 | +https://www.dataprovider.com/ |
| 20 | 23 | 0.03 | 10 | 0.08 | Windows ME |
| 21 | 20 | 0.03 | 16 | 0.13 | Auto; Windows |
| 22 | 20 | 0.03 | 12 | 0.10 | MSIE 5.5; Windows NT 5.0 |
| 23 | 17 | 0.02 | 12 | 0.10 | Windows CE |
| 24 | 17 | 0.02 | 11 | 0.09 | Windows 3.1 |
| 25 | 16 | 0.02 | 2 | 0.02 | +http://siteexplorer.info/ |
| 26 | 15 | 0.02 | 14 | 0.11 | ) - BrowseX (2.0.0 Windows |
| 27 | 12 | 0.02 | 6 | 0.05 | Windows 2000 |
| 28 | 12 | 0.02 | 10 | 0.08 | MSIE 5.5; Windows NT 4.0 |
| 29 | 9 | 0.01 | 9 | 0.07 | +http://www.xovibot.net/ |
| 30 | 7 | 0.01 | 1 | 0.01 | crawler@mixrank.com |
| 31 | 4 | 0.01 | 2 | 0.02 | http://www.botje.com/plukkie.htm |
| 32 | 3 | 0.00 | 2 | 0.02 | +info@netcraft.com |
| 33 | 2 | 0.00 | 2 | 0.02 | http://nmap.org/book/nse.html |
| 34 | 2 | 0.00 | 0 | 0.00 | Wayback Machine Live Record; +http://arc... |
| 35 | 1 | 0.00 | 1 | 0.01 | +https://gimmeusa.com/crawler.html |
| 36 | 1 | 0.00 | 0 | 0.00 | CEMENT |
| 37 | 1 | 0.00 | 1 | 0.01 | FreeBSD [unknown version] |
| 38 | 1 | 0.00 | 0 | 0.00 | Linux i686 [unknown version] |
