dpkg -l|fgrep apache
ii  apache2                                2.2.20-1ubuntu1.2                       Apache HTTP Server metapackage
ii  apache2-mpm-worker                     2.2.20-1ubuntu1.2                       Apache HTTP Server - high speed threaded model
ii  apache2-threaded-dev                   2.2.20-1ubuntu1.2                       Apache development headers - threaded MPM
ii  apache2-utils                          2.2.20-1ubuntu1.2                       utility programs for webservers
ii  apache2.2-bin                          2.2.20-1ubuntu1.2                       Apache HTTP Server common binary files
ii  apache2.2-common                       2.2.20-1ubuntu1.2                       Apache HTTP Server common files
rc  libapache2-mod-perl2                   2.0.5-2ubuntu1                          Integration of perl with the Apache2 web server
ii  libbatik-java                          1.7.ubuntu-6ubuntu1                     xml.apache.org SVG Library