Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
NumWorks - The graphing calculator that makes learning math easier.
Facebook Local - Discover places to go and events happening near you
Paperspade - Type math easily through just English text!
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Fact Flow - Simple solution to help kids achieve math fluency