The University of Massachusetts Amherst (or as its commonly known, UMass Amherst) is the first established college in the University of Massachusetts system and it's also the largest in terms of both size and student enrollment.
Several UMass Amherst alumni have gone onto illustrious tech/entrepreneurial careers. We put together a slideshow of alumni who have made an impact on the startup/tech sector by either being a founder, investor, or CEO.
Please keep in mind that this is not meant to be a comprehensive list, but just a sampling.
Going through the pictures, there's bound to be at least one person that will make you go, "I didn't realize they went to UMass Amherst?"