Web applications
Open Source enables rich affordable content
Open source applications such as Joomla and Magento with their proven track-record, solid framework, numerous extensions and extensive on-line help and support groups offer a rich and reliable foundation to build sites of all shapes and sizes.
Whether your requirements are simple or more complex and involved, one of the benefits of Open Source sharing is that 'it has probably been done before', if not the same then it could be similar and may be straightforward to modify or adapt. By avoiding reinventing the wheel, time and costs are reduced allowing any effort to build something that is more compelling and easier to use.