Bookshelf, the books division of the NLM Literature Archive, is an online collection of full-text books, reports, databases and other documents, providing free access to over 700 texts in life science and healthcare. A vital node in the data-rich resource network at NCBI, Bookshelf enables users to easily browse, retrieve, and read content, and spurs discovery of related information. Some Bookshelf contents have a corresponding entry in PubMed. The books we host have been given to us by the publishers (we do not pay them any kind of fee). Each book is viewed as a new candidate for Bookshelf. Whether the next edition of a book comes out on Bookshelf depends on whether we have a new agreement for that edition with the publisher. The publisher must contact us with this request. You may also contact the publisher directly to request that the next edition be placed on Bookshelf.
SciCrunch is a data sharing and display platform. Anyone can create a custom portal where they can select searchable subsets of hundreds of data sources, brand their web pages and create their community. SciCrunch will push data updates automatically to all portals on a weekly basis. User communities can also add their own data to scicrunch, however this is not currently a free service.