| Used Operating Systems |
| 1 | 5627 | 42.66 | 1993 | 36.97 | Windows NT |
| 2 | 5617 | 42.59 | 2715 | 50.36 | http://help.yahoo.com/help/us/ysearch/sl... |
| 3 | 437 | 3.31 | 96 | 1.78 | +http://www.google.com/bot.html |
| 4 | 352 | 2.67 | 196 | 3.64 | +http://about.ask.com/en/docs/about/webm... |
| 5 | 281 | 2.13 | 150 | 2.78 | Windows 98 |
| 6 | 240 | 1.82 | 48 | 0.89 | PPC Mac OS X Mach-O |
| 7 | 159 | 1.21 | 24 | 0.45 | Linux i686 [unknown version] |
| 8 | 106 | 0.80 | 4 | 0.07 | Windows XP |
| 9 | 62 | 0.47 | 28 | 0.52 | +http://sp.ask.com/docs/about/tech_crawl... |
| 10 | 46 | 0.35 | 23 | 0.43 | http://misc.yahoo.com.cn/help.html |
| 11 | 42 | 0.32 | 9 | 0.17 | Intel Mac OS X |
| 12 | 32 | 0.24 | 17 | 0.32 | +http://www.exabot.com/go/robot |
| 13 | 31 | 0.24 | 5 | 0.09 | Win32 |
| 14 | 26 | 0.20 | 16 | 0.30 | Macintosh PPC |
| 15 | 25 | 0.19 | 13 | 0.24 | Windows 95 |
| 16 | 22 | 0.17 | 5 | 0.09 | Macintosh |
| 17 | 16 | 0.12 | 6 | 0.11 | http://www.webbot.ru/bot.html |
| 18 | 12 | 0.09 | 6 | 0.11 | FreeBSD [unknown version] |
| 19 | 10 | 0.08 | 4 | 0.07 | +http://www.become.com/site_owners.html |
| 20 | 6 | 0.05 | 0 | 0.00 | http://www.yoono.com/ |
| 21 | 5 | 0.04 | 5 | 0.09 | Bluecoat DRTR |
| 22 | 4 | 0.03 | 2 | 0.04 | PPC Mac OS X |
| 23 | 4 | 0.03 | 0 | 0.00 | Windows 9x |
| 24 | 2 | 0.02 | 2 | 0.04 | webcrawler at wise-guys dot nl; http://w... |
| 25 | 2 | 0.02 | 0 | 0.00 | webcrawler at wise-guys dot nl; http://w... |
| 26 | 2 | 0.02 | 2 | 0.04 | i686 Linux; 20021107 |
| 27 | 2 | 0.02 | 2 | 0.04 | i686 Linux; 20020424 |
| 28 | 2 | 0.02 | 2 | 0.04 | i686 Linux; 20020307 |
| 29 | 2 | 0.02 | 2 | 0.04 | i686 Linux; 20021219 |
| 30 | 2 | 0.02 | 2 | 0.04 | +http://about.depspid.net |
| 31 | 2 | 0.02 | 2 | 0.04 | i686 Linux; 20020210 |
| 32 | 2 | 0.02 | 2 | 0.04 | i686 Linux; 20021104 |
| 33 | 2 | 0.02 | 2 | 0.04 | i686 Linux; 20020822 |
| 34 | 2 | 0.02 | 2 | 0.04 | i686 Linux; 20021023 |
| 35 | 2 | 0.02 | 2 | 0.04 | i686 Linux; 20020811 |
| 36 | 2 | 0.02 | 2 | 0.04 | i686 Linux; 20020110 |
| 37 | 1 | 0.01 | 1 | 0.02 | i686 Linux; 20020520 |
| 38 | 1 | 0.01 | 1 | 0.02 | i686 Linux; 20020518 |
