Libraries of the World and their Catalogues
- Links to national, academic and public libraries and their catalogues. Compiled by Sylvia Milne, a retired librarian.
- http://www.sylviamilne.co.uk/libcats.htm

Libraries411.com
- Searchable directory and maps for over 20,000 US and Canadian public libraries.
- http://www.libraries411.com

Switzerland's Directory of Archives and Databases
- Information on contents, location, contact, online catalogues, and the conditions of use of hundreds of databases, archives and libraries in Switzerland.
- http://www.swissinfo.org/sen/swissinfo.html?siteSect=821&cat=20

Libweb
- Searchable and categorized links to over 7,000 pages from libraries in over 100 countries, including academic, public and national libraries worldwide; library organizations and consortia; and related sites.
- http://lists.webjunction.org/libweb/

Philadelphia Area Consortium of Special Collections Libraries
- Includes links to member libraries, online exhibits, and catalogs.
- http://www.pacscl.org/

Canadian Directory of Special Collections
- Directory for these types of libraries in Canada. Contains the description and history of each collection.
- http://www.collectionscanada.ca/collectionsp/index-e.html

Lii.org: Librarianship
- Point of access for librarian-selected internet resources worldwide asorted by topics.
- http://lii.org/search/file/libraries

Bookwire
- Descriptive listing of US libraries alphabetically and by state, as well as an index of Asian, European, Canadian and special libraries.
- http://www.bookwire.com/bookwire/libraries/libraries.html

Libraries and Archives
- Index of links to universities and libraries worldwide as well as references to various directories.
- http://www.uky.edu/Subject/libraries.html

Law Libraries Worldwide
- Chan Robles & Associates provides links to major law libraries around the world.
- http://www.chanrobles.com/lawlib1.htm

Internet Quick Reference Shelf: Library Resources
- Collection of links presented by the University of Indiana categorized by topics.
- http://www.indiana.edu/~librcsd/internet/Library_Resources/

Global Reach
- Searchable database which shows the involvement of librarians and libraries in international library activities.
- https://cs.ala.org/global/

Library and Information Science
- IFLA list of world wide web accessible libraries worldwide sorted by countries.
- http://www.ifla.org/II/natlibs.htm

NLS/BPH: Reference Directories Index Page
- A list of directories provided by the U.S. Library of Congress, National Library Service for the Blind and Physically Handicapped.
- http://www.loc.gov/nls/reference/directories/

National Library Catalogues Worldwide
- Index of libraries with detailed descriptions about the handling of the search interfaces sorted by countries.
- http://www.library.uq.edu.au/ssah/jeast/

Library and Related Resources
- List of references indexed by topics like public, school and national libraries. Also includes sections about organisations and science resources.
- http://www.ex.ac.uk/library/wwwlibs.html

ISBNDB
- Multilingual database of international standard book numbers. Offers the possibility to investigate by category.
- http://isbndb.com/

Lib Web Cats
- Searchable database of over 5,000 library sites worldwide. Listings include mailing addresses and links to online catalogs.
- http://www.librarytechnology.org/libwebcats/

School Libraries on the Web
- Worldwide directory of school library sites. The US categories also list related library organizations.
- http://www.sldirectory.com/

The WWW Library Directory
- Searchable directory of over 8,000 library and library-related sites worldwide arranged by countries. Includes a US section sorted by states.
- http://www.webpan.com/msauers/libdir/

LibDex
- World index of library sites with over 18,000 database entries. Includes a list of libraries by catalog vendor.
- http://www.libdex.com/