| Used Operating Systems |
| 1 | 4628 | 28.00 | 114 | 1.80 | http://mj12bot.com/ |
| 2 | 2938 | 17.78 | 2392 | 37.70 | +http://www.baidu.com/search/spider.html |
| 3 | 1802 | 10.90 | 19 | 0.30 | http://www.majestic12.co.uk/bot.php?+ |
| 4 | 995 | 6.02 | 255 | 4.02 | +http://www.bing.com/bingbot.htm |
| 5 | 856 | 5.18 | 274 | 4.32 | Windows NT |
| 6 | 606 | 3.67 | 201 | 3.17 | +http://www.google.com/bot.html |
| 7 | 461 | 2.79 | 120 | 1.89 | +http://www.linkdex.com/bots/ |
| 8 | 432 | 2.61 | 382 | 6.02 | Windows 2002 |
| 9 | 431 | 2.61 | 372 | 5.86 | Windows 2004 |
| 10 | 395 | 2.39 | 349 | 5.50 | Windows 2007 |
| 11 | 382 | 2.31 | 335 | 5.28 | Windows 2003 |
| 12 | 365 | 2.21 | 323 | 5.09 | Windows 2008 |
| 13 | 364 | 2.20 | 328 | 5.17 | Windows 2005 |
| 14 | 356 | 2.15 | 308 | 4.85 | Windows 2006 |
| 15 | 345 | 2.09 | 317 | 5.00 | Windows 9 |
| 16 | 321 | 1.94 | 24 | 0.38 | +http://napoveda.seznam.cz/en/seznambot-... |
| 17 | 104 | 0.63 | 44 | 0.69 | http://help.yahoo.com/help/us/ysearch/sl... |
| 18 | 103 | 0.62 | 27 | 0.43 | +http://yandex.com/bots |
| 19 | 94 | 0.57 | 6 | 0.09 | +http://www.semrush.com/bot.html |
| 20 | 64 | 0.39 | 25 | 0.39 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 21 | 57 | 0.34 | 19 | 0.30 | Windows XP |
| 22 | 50 | 0.30 | 5 | 0.08 | +http://OpenLinkProfiler.org/bot |
| 23 | 45 | 0.27 | 20 | 0.32 | +http://ahrefs.com/robot/ |
| 24 | 45 | 0.27 | 5 | 0.08 | +http://www.seokicks.de/robot.html |
| 25 | 43 | 0.26 | 7 | 0.11 | +http://siteexplorer.info/Backlink-Check... |
| 26 | 40 | 0.24 | 12 | 0.19 | Windows 98 |
| 27 | 38 | 0.23 | 4 | 0.06 | +http://webmeup-crawler.com/ |
| 28 | 30 | 0.18 | 10 | 0.16 | Windows 95 |
| 29 | 30 | 0.18 | 0 | 0.00 | http://filterdb.iss.net/crawler/ |
| 30 | 25 | 0.15 | 12 | 0.19 | +http://www.exabot.com/go/robot |
| 31 | 18 | 0.11 | 6 | 0.09 | ) - BrowseX (2.0.0 Windows |
| 32 | 14 | 0.08 | 8 | 0.13 | +https://deusu.de/robot.html |
| 33 | 6 | 0.04 | 2 | 0.03 | Windows 2000 |
| 34 | 6 | 0.04 | 3 | 0.05 | +http://duckduckgo.com |
| 35 | 5 | 0.03 | 1 | 0.02 | +http://www.profound.net/domainappender |
| 36 | 4 | 0.02 | 2 | 0.03 | +http://www.proximic.com/info/spider.php |
| 37 | 4 | 0.02 | 2 | 0.03 | +https://www.mojeek.com/bot.html |
| 38 | 4 | 0.02 | 2 | 0.03 | +http://nlp.fi.muni.cz/projects/biwec/ |
| 39 | 3 | 0.02 | 1 | 0.02 | Windows CE |
| 40 | 3 | 0.02 | 1 | 0.02 | Auto; Windows |
| 41 | 3 | 0.02 | 1 | 0.02 | Windows 3.1 |
| 42 | 3 | 0.02 | 2 | 0.03 | +info@netcraft.com |
| 43 | 3 | 0.02 | 1 | 0.02 | MSIE 5.5; Windows NT 5.0 |
| 44 | 3 | 0.02 | 1 | 0.02 | MSIE 5.5; Windows NT 4.0 |
| 45 | 1 | 0.01 | 1 | 0.02 | +http://pmoz.info/doc/botinfo.htm |
| 46 | 1 | 0.01 | 1 | 0.02 | +http://www.grapeshot.co.uk/crawler.php |
