dpkg -l|grep apache
ii apache-common 1.3.34-4.1 support files for all Apache webservers
ii apache-perl 1.3.34-4.1 versatile, high-performance HTTP server with
ii apache2-mpm-prefork 2.2.3-3.2build1 Traditional model for Apache HTTPD 2.1
ii apache2-utils 2.2.3-3.2build1 utility programs for webservers
ii apache2.2-common 2.2.3-3.2build1 Next generation, scalable, extendable web se
ii libapache-mod-perl 1.29.0.4-4.1 integration of perl with the Apache web serv
ii libapache2-mod-php5 5.2.1-0ubuntu1.1 server-side, HTML-embedded scripting languag