The OCLC Cooperative Online Resource Catalog is helping librarians thrive in the digital age. Librarians are using CORC to select, describe, maintain, and provide guided access to Web-based electronic resources. Librarians in more than 24 countries are using CORC and all types of libraries, including public, academic, corporate, school, and government libraries are contributing records to the CORC catalog. The CORC service offers a Web-based toolset for cataloging electronic resources, a robust database of high-quality resources, and a tool for building dynamic pathfinders. Developed by and for librarians, CORC blends three key elements— technology, cooperation and librarianship, to help librarians define the future of knowledge access management.