I use VCP my collection (a few thousand cards), I even enter my raw cards and just make a note that they are raw and guessing the grade. Its great because each group/set value is updated as cards are sold so my values change every day. It will also download into excel which is another bonus. Here is how it looks online-
This is a listing of groups and as you can see how many cards are listed inside, the *cost is the price of cards that have previous sales and the current value of them-
This is a listing inside a group of each card and value-
Been a huge help to my collection.