creating event search/finder

Any suggestions on plugin that collects lots of events/news from around the country and then allows my users to search for local events and then add them to their calendar.

I also need to customize incoming database with information that is suitable for my audience.

Ideally, I can stylize the “results” page so that it fits with my site. Has anyone tried outside.in (which i think includes Patch.com now) for this?