Use IESR
The IESR provides access to a constantly growing and up-to-date catalogue of resource descriptions and information on how to access those resources. Using IESR enables you to discover new resources and exploit content within the context of your own applications via web or machine interfaces. The registry is machine-readable and freely available to all users.
IESR content is multi-disciplinary, with particular strengths in the health and social sciences subject areas. Resource types include databases, datasets, bibliographic resources, e-learning materials, e-books, e-journals, repositories, research publications and image collections.