CoFoundersLab - Meet 250,000+ entrepreneurs online
Cvent - Cvent's event management software provides event planners with a complete solution to increase event attendance and decrease event costs.
Confs.tech - Open source list of tech conferences: JS / Ruby / Data etc.
EventMobi - EventMobi is an interactive mobile event app, audience response and engagement platform for conferences and trade shows.
Huntathon - Browse and submit Product Hunt Global Hackathon projects
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets