Use idle time on your computer (Windows, Mac, or Linux) to help scientists cure diseases, study global warming, discover pulsars, and do many other types of research!
BOINC (boinc.berkeley.edu) is a computer program that lets you donate your idle computer time to science projects like SETI@home, Climateprediction.net, Rosetta@home, World Community Grid, and many others.
BOINC is used by many volunteer computing projects. Some are based at universities and research labs, others are run by companies and individuals. After installing BOINC on your computer, you can participate in any number of these projects.
If you have any trouble setting BOINC up, visit BOINC's help page, or view the following video.
An alternative to BOINC is another distributed computing platform called Folding@Home (folding.stanford.edu).