Freebase is an open database of the world’s information. It’s built by the community and for the community – free for anyone to query, contribute to, build applications on top of, or integrate into their websites.
‡biblios.net is a web-based original and copy cataloging tool with built in federated search of any Z39.50 target (via an integrated search registry with over 2000 targets - or by adding your own) and a large (30 million strong) shared database of catalog records. This means that you can visit ‡biblios.net and benefit from the work of other catalogers who have gone before you. You can also edit and contribute to the database without any restrictions.