FUEL CYCLE by Passenger - Think Passenger builds online platforms that allow brands to connect, create and communicate with key stakeholders.
Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
Crowded Communities - The all-in-one community platform.
Event Hunt - Startups and Tech Events Curated By Locals
Mobilize - Mobilize is a scalable messaging app built for large groups.
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets