Swiffy is a Google-labs produced utility that converts SWF (Shockwave Flash) files to HTML5. HTML5 will run on many mobile devices (that won't run flash at all) and in current browsers without plugins.

A tool like Swiffy can be particularly useful for instructors who teach with "interactives" like this Dynamic Energy State Diagram. In the past it was very costly and time-consuming to convert these into other formats, but with Swiffy, the conversion process is free and easy.

Here's an example of a converted version of the Dynamic Energy State Diagram