The free JISC Academic Database Assessment Tool allows users to compare journal title lists, journal database capabilities, and e-book database capabilities for selected e-resource products and systems. For example, the user can compare the functionality of ebrary with that of NetLibrary.
Here's an excerpt from the press release:
With so many products offering a huge diversity and wealth of information, it can be difficult for librarians to know what resources they should be investing in. The Academic Database Assessment Tool provides access to detailed information and title lists for major bibliographic and full text databases. It also delivers key service information for database and e-Book content platforms. This enables librarians to quickly compare and contrast key items to assist in the purchase decision process. These include: a list of titles included in each database; search features available; linking methods e.g. full text linking; metadata standards and methods of access provided to these resources e.g. IP access, Athens or Shibboleth.
Prompted by the strong support from university librarians in the UK, a prototype version of this tool was launched at the end of 2006. Sponsorship from IBSS, Thomson Scientific, Elsevier and ProQuest means that this tool has been further developed from the beta stage of its development and continues to remain freely available.
As the information for this tool has been provided directly by the relevant content suppliers and publishers, librarians will have the opportunity to access the latest information on the resources they already subscribe to. Librarians can subscribe to the email altering service notifying them when suppliers update their listings.