| Used Operating Systems |
| 1 | 5931 | 34.52 | 3147 | 52.96 | Windows NT |
| 2 | 5478 | 31.88 | 370 | 6.23 | http://www.opensiteexplorer.org/dotbot, ... |
| 3 | 2129 | 12.39 | 1720 | 28.95 | +http://www.baidu.com/search/spider.html |
| 4 | 1499 | 8.72 | 71 | 1.19 | +http://www.easou.com/search/spider.html |
| 5 | 659 | 3.84 | 196 | 3.30 | +http://www.google.com/bot.html |
| 6 | 460 | 2.68 | 230 | 3.87 | +http://www.bing.com/bingbot.htm |
| 7 | 234 | 1.36 | 26 | 0.44 | +http://yandex.com/bots |
| 8 | 107 | 0.62 | 11 | 0.19 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 9 | 94 | 0.55 | 20 | 0.34 | +http://ahrefs.com/robot/ |
| 10 | 85 | 0.49 | 33 | 0.56 | http://help.yahoo.com/help/us/ysearch/sl... |
| 11 | 66 | 0.38 | 3 | 0.05 | http://crawler.007ac9.net/ |
| 12 | 54 | 0.31 | 20 | 0.34 | Windows 95 |
| 13 | 43 | 0.25 | 15 | 0.25 | Windows 98 |
| 14 | 38 | 0.22 | 2 | 0.03 | +http://www.seokicks.de/robot.html |
| 15 | 33 | 0.19 | 14 | 0.24 | +http://fulltext.sblog.cz/ |
| 16 | 28 | 0.16 | 2 | 0.03 | +http://OpenLinkProfiler.org/bot |
| 17 | 27 | 0.16 | 1 | 0.02 | +http://webmeup-crawler.com/ |
| 18 | 25 | 0.15 | 8 | 0.13 | +http://www.exabot.com/go/robot |
| 19 | 22 | 0.13 | 2 | 0.03 | http://www.searchmetrics.com/en/searchme... |
| 20 | 15 | 0.09 | 1 | 0.02 | +http://endb-consolidated.aihit.com/ |
| 21 | 15 | 0.09 | 4 | 0.07 | MSIE 5.5; Windows NT 4.0 |
| 22 | 14 | 0.08 | 5 | 0.08 | MSIE 5.5; Windows NT 5.0 |
| 23 | 12 | 0.07 | 4 | 0.07 | Windows CE |
| 24 | 12 | 0.07 | 4 | 0.07 | Windows XP |
| 25 | 11 | 0.06 | 1 | 0.02 | Linux [unknown version] |
| 26 | 11 | 0.06 | 1 | 0.02 | http://www.majestic12.co.uk/bot.php?+ |
| 27 | 10 | 0.06 | 4 | 0.07 | Windows ME |
| 28 | 10 | 0.06 | 2 | 0.03 | +http://siteexplorer.info/ |
| 29 | 8 | 0.05 | 3 | 0.05 | Auto; Windows |
| 30 | 6 | 0.03 | 2 | 0.03 | +http://getdownload.ws |
| 31 | 6 | 0.03 | 3 | 0.05 | +http://wmaid.com/explore/ |
| 32 | 5 | 0.03 | 1 | 0.02 | +http://tryload.in |
| 33 | 4 | 0.02 | 2 | 0.03 | http://crawler.sistrix.net/ |
| 34 | 4 | 0.02 | 1 | 0.02 | +http://wiki.github.com/bixo/bixo/bixocr... |
| 35 | 4 | 0.02 | 2 | 0.03 | X11 |
| 36 | 3 | 0.02 | 1 | 0.02 | Windows 3.1 |
| 37 | 3 | 0.02 | 2 | 0.03 | +info@netcraft.com |
| 38 | 3 | 0.02 | 0 | 0.00 | snap; +http://support.embed.ly/ |
| 39 | 3 | 0.02 | 1 | 0.02 | +http://overx50.com/ |
| 40 | 2 | 0.01 | 2 | 0.03 | +http://fb02itsscan.fh-muenster.de |
| 41 | 2 | 0.01 | 1 | 0.02 | +http://www.idmarch.org/bot.html |
| 42 | 2 | 0.01 | 0 | 0.00 | http://filterdb.iss.net/crawler/ |
| 43 | 1 | 0.01 | 1 | 0.02 | Windows 2000 |
| 44 | 1 | 0.01 | 1 | 0.02 | +http://support.embed.ly/ |
| 45 | 1 | 0.01 | 1 | 0.02 | Intel Mac OS X 10.4 |
| 46 | 1 | 0.01 | 1 | 0.02 | +http://www.xovibot.net/ |
| 47 | 1 | 0.01 | 0 | 0.00 | PPC Mac OS X Mach-O |
