April 2001 Security Space Survey Results
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The Security Space Web Server Survey is a survey of Web server software usage on the Internet broken down by 86 domains. Security Space estimates that even though there are almost 20 million Web sites, nearly 90 percent are "orphans" to which no other sites link. Security Space''s Web server survey includes only those servers referenced on other sites.
More than 2.7 million Web sites responded to the April 2001 survey.
| All Domains (2,748,079) server order is based on global market share | |||||
| Server | April Count |
April % | March Count |
March % | Change |
| Apache | 1,624,013 | 59.10% | 1,520,333 | 58.48% | +0.62% |
| Microsoft | 778,377 | 28.32% | 744,313 | 28.63% | -0.31% |
| Netscape | 92,394 | 3.36% | 92,290 | 3.55% | -0.19% |
| Zeus | 29,511 | 1.07% | 26,867 | 1.03% | +0.04% |
| WebSTAR | 24,050 | 0.88% | 23,588 | 0.91% | -0.03% |
| WebSite | 23,288 | 0.85% | 22,962 | 0.88% | -0.03% |
| Other | 176,446 | 6.42% | 169,242 | 6.51% | -0.09% |
| Domain Summary | ||||
| Domain | Description | Web Servers | Percentage | |
| com | Commercial | 1,280,996 | 46.61% | |
| de | Germany | 227,207 | 8.27% | |
| org | Nonprofit Orgs | 160,127 | 5.83% | |
| uk | United Kingdom | 148,716 | 5.41% | |
| net | Network | 146,271 | 5.32% | |
| edu | Educational | 50,809 | 1.85% | |
| gov | U.S. Government | 7,333 | 0.27% | |
| Server Breakdown Across All Domains of servers with more than 1% market share. Server order is based on global market share | ||||
| Server Name | Number Found | Percentage | ||
| Microsoft-IIS/4.0 | 540,920 | 19.68% | ||
| Apache/1.3.12 | 357,167 | 13.00% | ||
| Apache/1.3.9 | 267,492 | 9.73% | ||
| Apache/1.3.14 | 223,910 | 8.15% | ||
| Microsoft-IIS/5.0 | 203,543 | 7.41% | ||
| Apache/1.3.6 | 173,388 | 6.31% | ||
| Apache/1.3.3 | 91,599 | 3.33% | ||
| Apache/1.3.4 | 74,142 | 2.70% | ||
| Apache/1.3.19 | 67,582 | 2.46% | ||
| Apache/1.3.17 | 63,657 | 2.32% | ||
| Apache/1.3.11 | 62,890 | 2.29% | ||
| Apache/1.2.6 | 56,593 | 2.06% | ||
| thttpd/1.00.disbu | 40,611 | 1.48% | ||
| Netscape-Enterprise/3.6 | 40,335 | 1.47% | ||
| Rapidsite/Apa-1.3.4 | 37,844 | 1.38% | ||
| Microsoft-IIS/3.0 | 30,672 | 1.12% | ||
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