Open your library to the world
and open the world to your library
As an OCLC contributing member, your library will have access to a global network of thousands of other libraries working together to contribute data, pool expertise, and share the work of managing collective collections to provide access to knowledge.
When you catalog with us, you benefit from WorldCat®, the world’s largest bibliographic database. Only WorldCat marshals the collective expertise of thousands of libraries, partners, and OCLC staff members to continuously improve cataloging records for the benefit of the whole library community.
Your subscription includes a variety of services to support metadata management. Learn more about the individual tools and how they differ so you can decide what will work best for you and your library. Then, set up the services you want.
Create your WorldShare password. Then use your library’s unique WorldShare URL and your username (which you should have received via email) to get started with WorldShare Record Manager and WorldShare Collection Manager.
Explore and request access to OCLC's cataloging APIs, including the WorldCat metadata API, WorldCat knowledge base API, and WorldCat registry API.
Through OCLC Support, you can access free documentation, training videos, live and on-demand webinars, FAQs, and other information to help you get the most out of your services. We also offer free training on all products.
And if you’re having trouble with one of your cataloging services, check the System Status Dashboard for a quick overview of all known issues.
Library staff and volunteers can access free, live webinars through WebJunction, and on‑demand courses and webinars in our Course Catalog.
"It's very much a cooperative project, and it reflects the cooperative cataloging spirit that we all need and depend on. I'm hoping that other libraries share by replacing the current copy of the WorldCat records so that we’re all better off."
Electronic Resources Cataloging Librarian, Shared Cataloging Program, California Digital Library
Find out how Lakewood Public Library gets large monthly book orders out to library users within 24 hours of delivery.
See how CSIC, the Spanish National Research Council, engages with researchers worldwide through highly visible collections.
Make connections and share best practices with metadata specialists from OCLC and libraries around the world through the OCLC Community Center.
The Cataloging and Metadata, WorldShare Collection Manager, and WorldShare Record Manager communities are buzzing with ideas for product improvements, virtual events, office hours, information about new enhancements, product roadmaps, training resources, and so much more.
Sign in with your WorldShare credentials to contribute and learn from the ongoing discussion.
Also, subscribe to OCLC listservs, such as OCLC-CAT, to particpate in a public forum about OCLC products and services.
OCLC Research is one of the world’s leading centers devoted exclusively to the challenges facing libraries today. Among other work, we’ve explored the potential of linked data through original research, surveys, and prototypes in partnership with libraries worldwide to understand and overcome barriers. We encourage member institutions to participate in and learn from our research projects, and we offer free access to our reports, data sets, and applications.
The OCLC library network provides unparalleled access to the world’s collected knowledge in ways that couldn’t be achieved independently. And it provides all libraries with the ability to address shared challenges at scale. When you actively participate in OCLC—through leadership, advocacy, events, and other opportunities—you help libraries advance further, faster together.