EQ is a quilt design program. BlockBase is a collection of quilt blocks that can be viewed, but typically is used in conjunction with EQ. In other words, you add blocks from BlockBase into the quilt design program. EQ already comes with quite a few blocks; BlockBase just adds a whole lot more. Maybe this link will help:
http://electricquilt.com/online-shop...e/#tab-Details
Be sure to click on all the different tabs: Details, Features, etc.