Just what is this useful for? Well, with the amount of data users are typing into Web pages these days, features like undo and auto-save are starting to become vital, and AMASS makes them much easier (and less costly) to implement.
In its initial test version, AMASS supports Internet Explorer 6, Firefox, and other Mozilla-based browsers on Windows only. Linux is untested, and there are known problems on the Mac. Still, it’s an innovative idea that may pan out into a useful tool if the author can solve the compatibility issues.