Connexion is OCLC's flagship cataloging service, a powerful, flexible suite of tools with built-in access to WorldCat, the world's largest bibliographic database.

Libraries use Connexion to create and edit quality bibliographic and authority records, which help users find the materials they need faster. Connexion facilitates sharing of records with the entire OCLC cooperative, which benefits libraries worldwide.

Connexion provides unparalleled flexibility for libraries of all sizes. It's the culmination of OCLC's 30 years of cataloging expertise, and represents the future of OCLC shared cataloging services for your diverse and ever-expanding needs.

Behind it, the power of WorldCat

Connexion integrates your cataloging with WorldCat, the world's most comprehensive online union catalog and bibliographic database. WorldCat brings together the cataloging expertise of the OCLC cooperative to save time by eliminating duplication of effort, ensuring your catalog is in sync with libraries everywhere.

Adapts to your existing processes

Different libraries perform cataloging in different ways, so Connexion's scalable design blends with any workflow and displays only the functionality required.

Your choice of interface

Connexion can be matched to the user or situation: An easy-to-master Web interface makes the service available anywhere via a standard browser, while the Windows-based client interface gives catalogers additional options and control.

Should you use CatExpress?

If you're new to OCLC services and your library catalogs fewer than 7,000 titles per year, or you need basic copy cataloging functionality and record exporting, you may want to use the streamlined functionality of CatExpress. OCLC member libraries should use Connexion's copy-cataloging features under the Express tab.