| Used Operating Systems |
| 1 | 10333 | 44.21 | 4392 | 51.61 | Windows NT |
| 2 | 5083 | 21.75 | 100 | 1.18 | http://www.majestic12.co.uk/bot.php?+ |
| 3 | 2326 | 9.95 | 2269 | 26.66 | +http://www.baidu.com/search/spider.html |
| 4 | 2237 | 9.57 | 38 | 0.45 | Windows 98 |
| 5 | 817 | 3.50 | 424 | 4.98 | +http://www.google.com/bot.html |
| 6 | 695 | 2.97 | 325 | 3.82 | +http://www.bing.com/bingbot.htm |
| 7 | 388 | 1.66 | 266 | 3.13 | Windows 95 |
| 8 | 288 | 1.23 | 101 | 1.19 | +http://www.linkdex.com/bots/ |
| 9 | 183 | 0.78 | 17 | 0.20 | +http://yandex.com/bots |
| 10 | 94 | 0.40 | 29 | 0.34 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 11 | 81 | 0.35 | 64 | 0.75 | MSIE 5.5; Windows NT 4.0 |
| 12 | 74 | 0.32 | 57 | 0.67 | Windows 3.1 |
| 13 | 74 | 0.32 | 67 | 0.79 | MSIE 5.5; Windows NT 5.0 |
| 14 | 66 | 0.28 | 2 | 0.02 | Windows XP |
| 15 | 66 | 0.28 | 45 | 0.53 | Windows ME |
| 16 | 62 | 0.27 | 54 | 0.63 | Windows 2000 |
| 17 | 62 | 0.27 | 47 | 0.55 | Windows CE |
| 18 | 61 | 0.26 | 54 | 0.63 | ) - BrowseX (2.0.0 Windows |
| 19 | 58 | 0.25 | 53 | 0.62 | Auto; Windows |
| 20 | 38 | 0.16 | 21 | 0.25 | +http://www.easou.com/search/spider.html |
| 21 | 33 | 0.14 | 12 | 0.14 | +http://ahrefs.com/robot/ |
| 22 | 28 | 0.12 | 2 | 0.02 | +http://OpenLinkProfiler.org/bot |
| 23 | 26 | 0.11 | 12 | 0.14 | http://www.opensiteexplorer.org/dotbot, ... |
| 24 | 22 | 0.09 | 11 | 0.13 | +http://www.meanpath.com/meanpathbot.htm... |
| 25 | 19 | 0.08 | 5 | 0.06 | +http://www.exabot.com/go/robot |
| 26 | 18 | 0.08 | 1 | 0.01 | Windows 92 |
| 27 | 18 | 0.08 | 1 | 0.01 | Windows Phone OS 7.5 |
| 28 | 16 | 0.07 | 1 | 0.01 | +http://filterdb.iss.net/crawler/ |
| 29 | 16 | 0.07 | 1 | 0.01 | +http://www.linkpad.ru |
| 30 | 13 | 0.06 | 1 | 0.01 | +http://endb-consolidated.aihit.com/ |
| 31 | 10 | 0.04 | 7 | 0.08 | X11 |
| 32 | 9 | 0.04 | 5 | 0.06 | http://help.yahoo.com/help/us/ysearch/sl... |
| 33 | 7 | 0.03 | 2 | 0.02 | +http://mydownloadengine.com |
| 34 | 5 | 0.02 | 1 | 0.01 | +http://overx50.com |
| 35 | 5 | 0.02 | 2 | 0.02 | Android 2.3.5 |
| 36 | 5 | 0.02 | 3 | 0.04 | +http://www.xovibot.net/ |
| 37 | 4 | 0.02 | 2 | 0.02 | http://crawler.sistrix.net/ |
| 38 | 4 | 0.02 | 0 | 0.00 | Wayback Machine Live Record; +http://arc... |
| 39 | 4 | 0.02 | 4 | 0.05 | Linux i686 [unknown version] |
| 40 | 4 | 0.02 | 2 | 0.02 | +http://wmaid.com/explore/ |
| 41 | 3 | 0.01 | 1 | 0.01 | +http://downloaflare.biz |
| 42 | 3 | 0.01 | 2 | 0.02 | +info@netcraft.com |
| 43 | 3 | 0.01 | 1 | 0.01 | +http://siteexplorer.info/ |
| 44 | 3 | 0.01 | 1 | 0.01 | +http://inload.me |
| 45 | 2 | 0.01 | 1 | 0.01 | Intel Mac OS X 10.4 |
| 46 | 2 | 0.01 | 1 | 0.01 | +http://wiki.github.com/bixo/bixo/bixocr... |
| 47 | 2 | 0.01 | 1 | 0.01 | +http://www.grapeshot.co.uk/crawler.php |
| 48 | 1 | 0.00 | 0 | 0.00 | Macintosh PPC |
| 49 | 1 | 0.00 | 1 | 0.01 | +http://fb02itsscan.fh-muenster.de |
| 50 | 1 | 0.00 | 1 | 0.01 | Linux i586 [unknown version] |
