GitHub Polls - Polls for GitHub issues and readme
Cvent - Cvent's event management software provides event planners with a complete solution to increase event attendance and decrease event costs.
Octotree - Github on steroids
Eventzilla - Eventzilla lets you sell tickets online and manage attendees from one integrated application.
Metaverse - Democratized augmented reality platform: AR for everyone!
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets