Mavo

"Mavo helps you turn your static HTML into reactive web applications without a single line of programming code and no server backend.
Developed in the Haystack Group at MIT CSAIL and led by Lea Verou.

Features:

• Mavo extends the syntax of HTML to describe Web applications that manage, store, and transform data.
• Store data in the cloud, locally, or not at all by just changing an HTML attribute
• Edit data right in the website, with an intuitive, auto-generated, customizable interface. No more wrestling with CMSes and servers!
• Multimedia uploads in your page via drag & drop, pasting, or browsing, without a single line of code.
• Perform calculations right in the HTML, that update when needed. No need to write JavaScript

http://mavo.io/