TimelineJS
TimelineJS is a Javascript and CSS based tool for creating media-rich, interactive
timelines. While more of a tool kit than a platform, TimelineJS is incredibly easy to use. Using TimelineJS' sample Google spreadsheet, one simply adds dates, text and links to media into appropriate columns. Links to media can include video (Youtube, Vimeo and DailyMotion), audio, images (Flickr), Google Maps, Google+ status updates and even Twitter posts. Once you've saved the Google spreadsheet and made it public, simply copy and paste the spreadsheet's URL into TimelineJS'
generator and then use the iframe embed code it produces.
Click here to see how to embed TimelineJS or other third party material into a Scalar page.