| Used Operating Systems |
| 1 | 2754 | 28.59 | 2430 | 48.43 | +http://www.baidu.com/search/spider.html |
| 2 | 1660 | 17.23 | 352 | 7.01 | http://www.opensiteexplorer.org/dotbot, ... |
| 3 | 1428 | 14.82 | 1178 | 23.48 | Windows NT |
| 4 | 636 | 6.60 | 116 | 2.31 | +http://yandex.com/bots |
| 5 | 566 | 5.88 | 4 | 0.08 | +http://OpenLinkProfiler.org/bot |
| 6 | 530 | 5.50 | 56 | 1.12 | http://www.majestic12.co.uk/bot.php?+ |
| 7 | 439 | 4.56 | 246 | 4.90 | +http://www.bing.com/bingbot.htm |
| 8 | 436 | 4.53 | 2 | 0.04 | +http://webmeup-crawler.com/ |
| 9 | 306 | 3.18 | 173 | 3.45 | +http://www.google.com/bot.html |
| 10 | 276 | 2.86 | 227 | 4.52 | +http://ahrefs.com/robot/ |
| 11 | 173 | 1.80 | 74 | 1.47 | http://help.yahoo.com/help/us/ysearch/sl... |
| 12 | 152 | 1.58 | 62 | 1.24 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 13 | 66 | 0.69 | 2 | 0.04 | +http://endb-consolidated.aihit.com/ |
| 14 | 54 | 0.56 | 27 | 0.54 | +http://www.meanpath.com/meanpathbot.htm... |
| 15 | 42 | 0.44 | 16 | 0.32 | +http://www.exabot.com/go/robot |
| 16 | 23 | 0.24 | 22 | 0.44 | +http://www.easou.com/search/spider.html |
| 17 | 10 | 0.10 | 2 | 0.04 | +http://overx50.com |
| 18 | 10 | 0.10 | 0 | 0.00 | Linux [unknown version] |
| 19 | 10 | 0.10 | 3 | 0.06 | +http://mydownloadengine.com |
| 20 | 9 | 0.09 | 1 | 0.02 | +http://www.linkpad.ru |
| 21 | 8 | 0.08 | 4 | 0.08 | +http://fulltext.sblog.cz/ |
| 22 | 6 | 0.06 | 3 | 0.06 | +http://wmaid.com/explore/ |
| 23 | 6 | 0.06 | 2 | 0.04 | +http://inload.me |
| 24 | 4 | 0.04 | 1 | 0.02 | +http://uni5download.com |
| 25 | 4 | 0.04 | 4 | 0.08 | Linux i686 [unknown version] |
| 26 | 4 | 0.04 | 2 | 0.04 | +info@netcraft.com |
| 27 | 4 | 0.04 | 0 | 0.00 | +http://siteexplorer.info/ |
| 28 | 3 | 0.03 | 0 | 0.00 | Win32 |
| 29 | 3 | 0.03 | 3 | 0.06 | +http://fb02itsscan.fh-muenster.de |
| 30 | 3 | 0.03 | 1 | 0.02 | +http://downloaflare.biz |
| 31 | 2 | 0.02 | 0 | 0.00 | Linux 2.4.x |
| 32 | 2 | 0.02 | 2 | 0.04 | +http://136.186.231.16 |
| 33 | 2 | 0.02 | 1 | 0.02 | +http://nlp.fi.muni.cz/projects/biwec/ |
| 34 | 2 | 0.02 | 2 | 0.04 | Windows 98 |
| 35 | 1 | 0.01 | 0 | 0.00 | PPC Mac OS X Mach-O |
