Is There a Good Solution for a Book Management Software?

i promised on the air that we will build the most beautiful, the best a reading soft word the world has ever seen. I feel like there are very large elements of current reading system that could be ripped out and replaced with something much more simple. And when i think about ideal reading software, you know, what's at the centre of my bookshelf at home is not a vending machinefor to buy more books. It is my books. We hope to some day build on erbit.