W3C:

2008-06-25: The Web Applications Working Group has published a Last Call Working Draft of Widgets 1.0: Requirements. This document lists the design goals and requirements that a specification would need to address in order to standardize various aspects of widgets. Widgets are small client-side Web applications for displaying and updating remote data, that are packaged in a way to allow download and installation on a client machine, mobile phone, or mobile Internet device. Comments are welcome through 01 August. Learn more about the Rich Web Client Activity. (Permalink)