Gadgets are similar to Apple’s Dashboard Widgets, since in both cases they are small applications that offer quick access to dynamic information. According to Google, Gadgets can work together with Apple Widgets in the Mac OS X Dashboard.
According to Google, “For users, this means that they can install hundreds of Google Gadgets with just a click of the mouse and run them in the Dashboard. They can also use the Gadgets to enhance their personal websites, by copying and pasting the HTML into the code. page source “.
For developers, Google indicates that the new API (which is already available) will allow them to write a set of cross-platform Gadgets.