D3.js - D3.js is a JavaScript library for manipulating documents based on data. D3 helps you bring data to life using HTML, SVG, and CSS.
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Chart.js - Easy, object oriented client side graphs for designers and developers.
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.
Google Charts - Interactive charts for browsers and mobile devices.
Eventzilla - Eventzilla lets you sell tickets online and manage attendees from one integrated application.