Modules are like extra programs that you can install into your webs site.

• Information Pages
• Forums
• News
• Blogs
• Photo Galleries
• Calendars
• Guest Books
• Shopping Carts

There is already a large array of available modules pre-installed on your system. Otherwise, there is a heap of extra modules written by the Zikula Community that you can install and use for free.

• http://community.zikula.org/module-Database-main-tid-3.htm
• http://noc.zikula.org

Custom modules are also available. These could be used to manage clients and business specific data.