| Used Operating Systems |
| 1 | 19157 | 63.04 | 200 | 4.12 | http://www.majestic12.co.uk/bot.php?+ |
| 2 | 3723 | 12.25 | 1155 | 23.81 | Windows NT |
| 3 | 3351 | 11.03 | 2419 | 49.88 | +http://www.baidu.com/search/spider.html |
| 4 | 1279 | 4.21 | 262 | 5.40 | +http://www.bing.com/bingbot.htm |
| 5 | 788 | 2.59 | 268 | 5.53 | +http://www.google.com/bot.html |
| 6 | 469 | 1.54 | 161 | 3.32 | http://www.opensiteexplorer.org/dotbot, ... |
| 7 | 290 | 0.95 | 89 | 1.84 | +http://www.linkdex.com/bots/ |
| 8 | 233 | 0.77 | 34 | 0.70 | +http://corp.sputnik.ru/webmaster |
| 9 | 212 | 0.70 | 28 | 0.58 | +http://yandex.com/bots |
| 10 | 201 | 0.66 | 88 | 1.81 | http://help.yahoo.com/help/us/ysearch/sl... |
| 11 | 160 | 0.53 | 7 | 0.14 | +http://fulltext.sblog.cz/ |
| 12 | 105 | 0.35 | 62 | 1.28 | +http://ahrefs.com/robot/ |
| 13 | 89 | 0.29 | 3 | 0.06 | +http://www.seokicks.de/robot.html |
| 14 | 48 | 0.16 | 2 | 0.04 | +http://megaindex.com/crawler |
| 15 | 45 | 0.15 | 5 | 0.10 | +http://www.semrush.com/bot.html |
| 16 | 41 | 0.13 | 1 | 0.02 | +http://OpenLinkProfiler.org/bot |
| 17 | 37 | 0.12 | 2 | 0.04 | +http://www.findxbot.com |
| 18 | 28 | 0.09 | 1 | 0.02 | +http://www.warebay.com/bot.html |
| 19 | 22 | 0.07 | 7 | 0.14 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 20 | 21 | 0.07 | 3 | 0.06 | http://filterdb.iss.net/crawler/ |
| 21 | 19 | 0.06 | 10 | 0.21 | +http://www.exabot.com/go/robot |
| 22 | 10 | 0.03 | 3 | 0.06 | Windows 98 |
| 23 | 8 | 0.03 | 8 | 0.16 | Windows 95 |
| 24 | 6 | 0.02 | 4 | 0.08 | http://nmap.org/book/nse.html |
| 25 | 6 | 0.02 | 4 | 0.08 | +info@netcraft.com |
| 26 | 6 | 0.02 | 0 | 0.00 | snap; +http://support.embed.ly/ |
| 27 | 4 | 0.01 | 2 | 0.04 | +http://www.seodiver.com/bot |
| 28 | 4 | 0.01 | 2 | 0.04 | http://www.botje.com/plukkie.htm |
| 29 | 4 | 0.01 | 4 | 0.08 | Windows 3.1 |
| 30 | 4 | 0.01 | 2 | 0.04 | +http://www.meanpath.com/meanpathbot.htm... |
| 31 | 3 | 0.01 | 1 | 0.02 | +http://nlp.fi.muni.cz/projects/biwec/ |
| 32 | 2 | 0.01 | 2 | 0.04 | Windows CE |
| 33 | 2 | 0.01 | 2 | 0.04 | Macintosh PPC |
| 34 | 2 | 0.01 | 2 | 0.04 | Windows Phone OS 7.5 |
| 35 | 2 | 0.01 | 2 | 0.04 | Linux i686 [unknown version] |
| 36 | 2 | 0.01 | 2 | 0.04 | +http://www.grapeshot.co.uk/crawler.php |
| 37 | 2 | 0.01 | 0 | 0.00 | +; |
| 38 | 1 | 0.00 | 0 | 0.00 | twingly.com |
| 39 | 1 | 0.00 | 1 | 0.02 | Windows XP |
| 40 | 1 | 0.00 | 1 | 0.02 | Windows ME |
| 41 | 1 | 0.00 | 0 | 0.00 | Wayback Machine Live Record; +http://arc... |
| 42 | 1 | 0.00 | 1 | 0.02 | ActiveXperts.Http |
