Web servers · comparison

Apache HTTP Server vs IIS

Apache HTTP Server is used on 1,787,502 sites, 11 times as many as IIS (163,972 sites).

In Web servers, Apache HTTP Server ranks #2 and IIS #5 by number of sites.

From Jul 2026 to Oct 2026, Apache HTTP Server grew 0.4% and IIS grew 0.4%.

56 sites run both: less than 0.1% of Apache HTTP Server sites and less than 0.1% of IIS sites.

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Apache HTTP Server

httpd.apache.org
Sites
1,787,502
Share of tracked sites
11.65%
Rank in Web servers
#2
Change since Jul 2026
▲ +0.36%
Ii

IIS

www.iis.net
Sites
163,972
Share of tracked sites
1.07%
Rank in Web servers
#5
Change since Jul 2026
▲ +0.43%

Sites using both

56
sites run Apache HTTP Server and IIS
of Apache HTTP Server sites<0.1%
of IIS sites<0.1%

Top sites using Apache HTTP Server

  1. wso2.download#17,612
  2. scilab.org#25,585
  3. akaihane.or.jp#110,800
  4. ai-gakkai.or.jp#117,764
  5. ucatolica.edu.co#156,485
All Apache HTTP Server sites →

Often used with Apache HTTP Server

Top sites using IIS

  1. druglibrary.org#48,215
All IIS sites →

Often used with IIS

More Web servers comparisons

Site counts and ranks come from our crawl of the web; the change compares the monthly adoption snapshots both technologies have.