Bar-Ilan University's Library system consists of the Wurzweiler Central Library, faculty and departmental libraries and specialized research center collections. The central library is the head of the pyramid and provides reference and technical services to all the campus libraries.
The Library system has an Online Catalog – Barcat – that is a joint catalog for the campus libraries, apart from the Law Librarywhich has an independent system. The Barcat catalog is part of the national "Aleph" system, serving Israel's university libraries, institutions and databases that belong to the network. The University's electronic resources belong to the Bar Ilan campus network and are accessible from every campus library. The library collection also includes online and offline material, electronic books and journals. The entire collection contains over 1,000,000 volumes, including periodicals, manuscripts and rare books.