Netcraft reports that Apache is now the leader in SSL Server too. Apache now runs on 44.0% of secure web sites, compared to 43.8% for Microsoft.
Apache has taken much longer to reach the top because version 1.0 did not include SSL at all due to US export control laws and the patent on the RSA algorithm. Now that mod_ssl is included as standard in version 2, Apache has become more popular for hosting secure websites. The total for Apache includes other projects from the ASF including Tomcat, and includes Apache-SSL, but does not include derived products like Stronghold or IBM HTTP Server. c2net/Red Hat includes only Stronghold and Red Hat SWS.
SSL support for Apache included using Apache-SSL and mod_ssl software projects.
Three cheers for Apache taking over mighty Microsoft Web server.