Amazon Video
Customers of Amazon Video can stream on the web using an HTML5 player (supported in Chrome, Firefox, Internet Explorer 11, Edge, Safari and Opera).
BrowserQuest
"BrowserQuest" is written in HTML5 and WebSockets and is playable from modern web browsers. The client makes use of HTML5's canvas element to render the graphics, web workers to initialize the map without affecting the rest of the page, localStorage to save progress, media queries to dynamically resize the game to the device, and HTML5 Audio to render the sound. The server uses node.js communicating with the browser using WebSockets. "BrowserQuest" is a demonstration of the technology that it uses.