Crunchbase - Crunchbase is a platform for discovering industry trends, investments, and news about companies around the world.
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
CB Insights - CB Insights is a company database for the venture capital and corporate development community.
Splash - Anyone can create a Splash event, whether you're a company hosting a single event or an individual hosting a personal event like a birthday or wedding. Get Started for Free. Text goes here. X. Full Event Program.
Tracxn - data on companies
Eventzilla - Eventzilla lets you sell tickets online and manage attendees from one integrated application.