Google Groups - Google Groups allows you to create and participate in online forums and email-based groups with a rich experience for community conversations.
Foursquare - Foursquare is all about helping you find new ways to explore your city.
TidyHQ - Organization management tool to support membership, subscriptions, event planning, and outreach.
Tripadvisor - The Tripadvisor mobile app is available for the Android and iOS platforms. It can be used to create reviews of hotels, restaurants, and to chat with other travelers on Tripadvisor forums.
Mighty Networks - Mighty Networks enables entrepreneurs, organizations, and companies to create and grow a community-powered brand.
Yellow Pages - YP.com local search connects you with over 19 million local businesses.