BOINC - BOINC is an open-source software platform for computing using volunteered resources
Zooniverse - The Zooniverse is home to the internet's largest, most popular and most successful citizen...
GridRepublic - Use GridRepublic, or Grid Republic, to join and manage participation in boinc volunteer distributed grid utility computing projects. Help us to create the world's largest top supercomputer. GridRepublic is a BOINC account manager.
MapSwipe - Mark streets and houses in satellite images to help create maps for humanitarian organizations.
Charity Engine - Charity Engine takes enormous, expensive computing jobs and chops them into 1000s of small pieces...
JPPF - The open source grid computing solution.