PercentageTools.com - Percentage calculator, online calculates percentage in many situations, simply enter the numbers and get the result and the formula of calculation.

Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.

Percentage Calculator - The percentage calculator to make your life easier

Eventbrite - Discover Great Events or Create Your Own & Sell Tickets

Bond - A simple app that reminds you to keep in touch with people

Bigtent - BigTent is a web-based organization and communication portal for groups.