- Library Search - Books & more at UC Irvine and UC System. Includes location & status of materials. Renew books and view your account with My Accounts.
- Online Archive of California - Detailed descriptions of primary source collections at UC Irvine and other California institutions.
- WorldCat - Search and request materials worldwide.
- California Digital Library
- University of California, Berkeley
- University of California, Davis
- University of California, Irvine
- University of California, Los Angeles
- University of California, Merced
- University of California, Riverside
- University of California, San Diego
- University of California, San Francisco
- University of California, Santa Barbara
- University of California, Santa Cruz
Directories of library Web sites
- LibDex: The Library Index A directory to library catalogs and websites
- Libweb A current, comprehensive listing of academic, public, state, national, and international library pages
- lib-web-cats A search form to web-based online catalogues
- California Polytechnic State University, Pomona
- California Polytechnic State University, San Luis Obispo
- California State University, Dominguez Hills
- California State University, Fullerton
- California State University, Long Beach
- California State University, San Diego
- California State University, San Marcos
- California State Library (Sacramento)
- Anaheim Public Library (See Community Services - Libraries)
- Buena Park Library District
- County of Los Angeles Public Library
- Fullerton Public Library
- Huntington Beach Public Library
- Los Angeles Public Library
- Mission Viejo Public Library
- Newport Beach Public Library
- Orange County Law Library
- Orange County Public Library
- Placentia Library District
- San Diego Public Library
- Yorba Linda Public Library