Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
CoFoundersLab - Meet 250,000+ entrepreneurs online
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.
Confs.tech - Open source list of tech conferences: JS / Ruby / Data etc.
Eventzilla - Eventzilla lets you sell tickets online and manage attendees from one integrated application.
Huntathon - Browse and submit Product Hunt Global Hackathon projects