Pragma - The home base for Ethereum developers.
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Blockbutler - Real-time transaction notifications for the blockchain
Cvent - Cvent's event management software provides event planners with a complete solution to increase event attendance and decrease event costs.
Pusher Beams - Send push notifications programmatically at scale
Ticket Tailor - Ticket Tailor is an easy-to-use event ticketing platform that allows event organizers of all shapes and sizes to sell tickets online.