Google Compute was a separately downloadable add-on for the Google Toolbar which allowed participation in a distributed computing project to help scientific research. It started on a limited basis in March 2002• and ended in October 2005.•
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Google Compute enabled a user's computer to help solve challenging scientific problems when the computer would otherwise be idle. When one enabled Google Compute, the computer downloaded a small piece of a large research problem and performed calculations on it that were then included with results from thousands of other computers. Google Compute was only available for the English language version of the Google Toolbar.•

The effort's first, and so far only, contribution was to Folding@home, a non-profit endeavor to model the process of protein folding in order to better understand and cure many different diseases. The Google Compute homepage recommends that users wishing to continue contributions to the project download the official Folding@home client.