| Used Operating Systems by Visits |
| 1 | 87002 | 51.53 | 7846 | 40.02 | Windows NT |
| 2 | 12033 | 7.13 | 6638 | 33.86 | +http://www.baidu.com/search/spider.html |
| 3 | 5419 | 3.21 | 1408 | 7.18 | WinHttp.WinHttpRequest.5 |
| 4 | 1092 | 0.65 | 583 | 2.97 | Windows 95 |
| 5 | 2074 | 1.23 | 478 | 2.44 | +http://www.easou.com/search/spider.html |
| 6 | 22629 | 13.40 | 374 | 1.91 | http://www.opensiteexplorer.org/dotbot, ... |
| 7 | 1610 | 0.95 | 364 | 1.86 | +http://www.google.com/bot.html |
| 8 | 5433 | 3.22 | 297 | 1.51 | +http://www.bing.com/bingbot.htm |
| 9 | 22546 | 13.35 | 215 | 1.10 | http://www.majestic12.co.uk/bot.php?+ |
| 10 | 197 | 0.12 | 133 | 0.68 | MSIE 5.5; Windows NT 5.0 |
| 11 | 177 | 0.10 | 130 | 0.66 | Auto; Windows |
| 12 | 188 | 0.11 | 130 | 0.66 | MSIE 5.5; Windows NT 4.0 |
| 13 | 197 | 0.12 | 127 | 0.65 | Windows 2000 |
| 14 | 175 | 0.10 | 122 | 0.62 | Windows CE |
| 15 | 456 | 0.27 | 118 | 0.60 | +http://www.linkdex.com/bots/ |
| 16 | 159 | 0.09 | 114 | 0.58 | ) - BrowseX (2.0.0 Windows |
| 17 | 179 | 0.11 | 101 | 0.52 | Windows ME |
| 18 | 173 | 0.10 | 101 | 0.52 | Windows 3.1 |
| 19 | 2048 | 1.21 | 87 | 0.44 | +http://yandex.com/bots |
| 20 | 770 | 0.46 | 57 | 0.29 | Windows 98 |
| 21 | 37 | 0.02 | 29 | 0.15 | +info@netcraft.com |
| 22 | 553 | 0.33 | 23 | 0.12 | http://help.yahoo.com/help/us/ysearch/sl... |
| 23 | 50 | 0.03 | 20 | 0.10 | +http://www.career-x.de/bot.html |
| 24 | 174 | 0.10 | 18 | 0.09 | +http://www.exabot.com/go/robot |
| 25 | 193 | 0.11 | 12 | 0.06 | +http://siteexplorer.info/ |
| 26 | 27 | 0.02 | 7 | 0.04 | +http://www.seodiver.com/bot |
| 27 | 14 | 0.01 | 7 | 0.04 | +http://www.meanpath.com/meanpathbot.htm... |
| 28 | 198 | 0.12 | 4 | 0.02 | Windows XP |
| 29 | 12 | 0.01 | 4 | 0.02 | +http://www.xovibot.net/ |
| 30 | 3 | 0.00 | 3 | 0.02 | +http://fb02itsscan.fh-muenster.de |
| 31 | 15 | 0.01 | 3 | 0.02 | Wayback Machine Live Record; +http://arc... |
| 32 | 6 | 0.00 | 3 | 0.02 | +http://wiki.github.com/bixo/bixo/bixocr... |
| 33 | 533 | 0.32 | 3 | 0.02 | +http://OpenLinkProfiler.org/bot |
| 34 | 278 | 0.16 | 3 | 0.02 | Windows Phone OS 7.5 |
| 35 | 207 | 0.12 | 3 | 0.02 | X11 |
| 36 | 202 | 0.12 | 3 | 0.02 | +http://fulltext.sblog.cz/ |
| 37 | 100 | 0.06 | 2 | 0.01 | http://www.lipperhey.com/ |
| 38 | 8 | 0.00 | 2 | 0.01 | +http://uni5download.com |
| 39 | 10 | 0.01 | 2 | 0.01 | +http://overx50.com |
| 40 | 584 | 0.35 | 2 | 0.01 | +http://ahrefs.com/robot/ |
| 41 | 54 | 0.03 | 2 | 0.01 | http://www.searchmetrics.com/en/searchme... |
| 42 | 7 | 0.00 | 2 | 0.01 | Linux [unknown version] |
| 43 | 10 | 0.01 | 2 | 0.01 | Linux i686 [unknown version] |
| 44 | 4 | 0.00 | 2 | 0.01 | +http://wmaid.com/explore/ |
| 45 | 8 | 0.00 | 2 | 0.01 | ScoutJet; +http://blekko.com/about/blekk... |
| 46 | 89 | 0.05 | 1 | 0.01 | Series 60 |
| 47 | 332 | 0.20 | 1 | 0.01 | Mail.RU_Bot/2.0; +http://go.mail.ru/help... |
| 48 | 2 | 0.00 | 1 | 0.01 | +http://www.proximic.com/info/spider.php |
| 49 | 2 | 0.00 | 1 | 0.01 | +http://www.netseer.com/crawler.html; cr... |
| 50 | 5 | 0.00 | 1 | 0.01 | +http://getdownload.ws |
| 51 | 1 | 0.00 | 1 | 0.01 | mailto: crawling@ubermetrics-technologie... |
| 52 | 27 | 0.02 | 1 | 0.01 | http://crawler.sistrix.net/ |
| 53 | 93 | 0.06 | 1 | 0.01 | Windows 92 |
| 54 | 3 | 0.00 | 1 | 0.01 | +http://downloaflare.biz |
| 55 | 101 | 0.06 | 1 | 0.01 | Android 2.3.5 |
| 56 | 4 | 0.00 | 1 | 0.01 | +http://www.idmarch.org/bot.html |
| 57 | 97 | 0.06 | 1 | 0.01 | +http://endb-consolidated.aihit.com/ |
| 58 | 2 | 0.00 | 1 | 0.01 | +http://nlp.fi.muni.cz/projects/biwec/ |
| 59 | 1 | 0.00 | 1 | 0.01 | http://blog.wasalive.com/wasalive-bots/ |
| 60 | 1 | 0.00 | 1 | 0.01 | Intel Mac OS X 10.6 |
| 61 | 67 | 0.04 | 1 | 0.01 | AOL 9.7; AOLBuild 4343.55; Windows NT 6.... |
| 62 | 4 | 0.00 | 1 | 0.01 | Archive-It; +http://archive-it.org/files... |
| 63 | 3 | 0.00 | 1 | 0.01 | +http://inload.me |
| 64 | 3 | 0.00 | 0 | 0.00 | Macintosh PPC |
| 65 | 104 | 0.06 | 0 | 0.00 | Android |
| 66 | 3 | 0.00 | 0 | 0.00 | Linux 2.4.x |
| 67 | 1 | 0.00 | 0 | 0.00 | MSIE 5.5; Windows NT 5.1 |
| 68 | 2 | 0.00 | 0 | 0.00 | +http://www.grapeshot.co.uk/crawler.php |
| 69 | 3 | 0.00 | 0 | 0.00 | PPC Mac OS X Mach-O |
| 70 | 1 | 0.00 | 0 | 0.00 | FreeBSD [unknown version] |
| 71 | 47 | 0.03 | 0 | 0.00 | Windows 99 |
