There was another launched around the same time as Seti@Home and before Folsing@Home. It was called IBM Grid.org [0]. It did the same as Seti@Home, but researched cancer.

Here [1] is a list of all active community computation projects and historical ones.

[0], https://en.wikipedia.org/wiki/Grid.org

[1], https://en.wikipedia.org/wiki/List_of_volunteer_computing_pr...