Kalam Labs - Twitch for Science
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
MathCrunch - Learn math stress free
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.
Code Fight Club - A fight club you can talk about. Less punching, more coding.
Eventzilla - Eventzilla lets you sell tickets online and manage attendees from one integrated application.