Sidekick by Hubspot - Customer insight integrated with your email tools.
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
HiHello - Exchange contacts, seamlessly.
Cvent - Cvent's event management software provides event planners with a complete solution to increase event attendance and decrease event costs.
Sansan - Sansan provides a internal contact sharing service for companies.
Socio - Connecting with people is just a "phone shake" away!