Clearbit - Clearbit provides Business Intelligence APIs
Attendify - Develop relationships at the events that you attend by creating smaller events with just a few people.
ZoomInfo - ZoomInfo is a B2B database providing detailed business information on people and companies.
Aventri - Aventri's event management technology has helped thousands of brands globally transform the way they plan and execute meetings and events while tracking and improving their business objectives.
InsideView - InsideView aggregates and curates all the company and contact data, news and social insights, and professional connections you need to do business better.
Eventzilla - Eventzilla lets you sell tickets online and manage attendees from one integrated application.