Google Contacts - Google Contacts is Google's contact management tool that is available in its free email service Gmail, as a standalone service, and as a part of Google's business-oriented suite of web apps Google Apps.
Glympse - Glympse is the easy way to safely share your location in realtime. No sign-up needed.
Cardbox - Contacts reimagined as a social network ✨
Foursquare - Foursquare is all about helping you find new ways to explore your city.
FullContact Card Reader - Automagically scan biz cards into LinkedIn/Gmail contacts
Mapple.me - Mapple.me bridges the gap between available time and availability of friends to increase social...