September 2011 Web Server Survey

In the September 2011 survey we received responses from 485,173,671 sites, a growth of nearly 4.8% (just over 22M hostnames) compared to last month.

Apache servers saw the largest growth this month (roughly 14M new hostnames), taking its total to over 315M, yet it continued to lose market share. Apache now serves twice as many hostnames as this time last year.

Nearly a quarter of this growth comes from new sites seen at Softlayer. By the end of the year, Softlayer’s global network will include points of presence (PoPs) and data centers throughout Europe and Asia, with the goal of bringing Softlayer’s network within 40ms of everyone on the planet. Both BurstNet and AmeriNOC also saw growths of over a million hostnames.

Nginx had the biggest increase in market share, with a growth of 0.36 percentage points. This is the largest increase that we have seen for nginx since January. Nginx also continues to increase its share of active sites, gaining ground on Microsoft and remaining as the 2nd most popular open source webserver. Google on the other hand saw a moderate loss in active sites this month, down by nearly 3.8M.

Total Sites Across All Domains
August 1995 - September 2011

Total Sites Across All Domains, August 1995 - September 2011


Market Share for Top Servers Across All Domains
August 1995 - September 2011

Graph of market share for top servers across all domains, August 1995 - September 2011


DeveloperAugust 2011PercentSeptember 2011PercentChange
Apache301,771,51865.18%315,605,33565.05%-0.13
Microsoft73,415,91615.86%76,323,01815.73%-0.13
nginx35,533,4397.67%38,970,6838.03%0.36
Google17,061,0033.68%17,265,3083.56%-0.13

Totals for Active Sites Across All Domains
June 2000 - September 2011


DeveloperAugust 2011PercentSeptember 2011PercentChange
Apache97,632,58559.99%99,963,63559.99%-0.00
Microsoft20,339,95412.50%20,548,83412.33%-0.17
nginx17,053,64210.48%17,495,43510.50%0.02
Google13,523,6368.31%13,270,0247.96%-0.35

For more information see Active Sites

Market Share for Top Servers Across the Million Busiest Sites
September 2008 - September 2011


DeveloperAugust 2011PercentSeptember 2011PercentChange
Apache655,55365.91%655,30865.88%-0.03
Microsoft154,68515.55%153,01515.38%-0.17
nginx71,5177.19%72,5117.29%0.10
Google21,8712.20%21,8042.19%-0.01