Sri Lankan University Libraries
| University of Colombo main Library OPAC | http://www.lib.cmb.ac.lk/opac_a.htm |
| University of Peradeniya main Library OPAC | http://www.lib.pdn.ac.lk/scripts/afwiinq.dll |
| University of Sri Jayawardenapura main Library OPAC | http://www.lib.sjp.ac.lk/scripts/AfwiInq.dll |
| University of Kelaniya main Library OPAC | http://192.248.24.66/jspopac/html/ |
| University of Moratuwa main Library OPAC | http://www.lib.mrt.ac.lk/opac/html/SearchForm |
| University of Ruhuna main Library OPAC | http://isuru.lib.ruh.ac.lk/cgi-bin/koha/opac-main.pl |
| South Eastern University of Sri Lanka OPAC | http://192.248.66.5:8000/cgi-bin/koha/opac-main.pl |
| Open University of Sri Lanka main Library OPAC | http://lib.ou.ac.lk:8080/lsopac/html/SearchForm |
| Buddhist and Pali University of Sri Lanka | http://www.bpu.ac.lk/library.htm |
Other Sri Lankan Libraries
| National Library and Documentation Centre OPAC | http://panhinda.natlib.lk/scripts/afwiinq.dll |
| National Union Catalogue, by National Library OPAC | http://203.115.24.86/wwwisis/ucat/form.htm |
| National Library Newspaper Article Index | http://panhinda.natlib.lk/wwwisis/newspi/form.htm |
| National Library Ethnic Conflict Database Index | http://panhinda.natlib.lk/wwwisis/depec/form.htm |
| National Library PhD Thesis Index | http://panhinda.natlib.lk/wwwisis/theses/form.htm |
| National Science Foundation -National Science Library and Resource Centre OPAC | http://thakshana.nsf.ac.lk/wwwisis/slstic/form.htm |
| Institute of Policy Studies Library OPAC | http://www.ips.lk/library/resources.html |
| Arthur C Clark Institute of Modern Technologies Library | http://www.accimt.ac.lk/library/library.html |
World Wide Online Catalogues
| Library of Congress online catalogue | http://catalog.loc.gov/ |
| School of Oriental and African Studies (SOAS) online catalogue | http://lib.soas.ac.uk/ |
| Worldcat - WorldCat is a union catalog which itemizes the collections of 71,000 libraries in 112 countries which participate in the Online Computer Library Center (OCLC) global cooperative. It is built and maintained collectively by the participating libraries. |
http://www.worldcat.org/ |
| OpenLibrary – Open Library is a project designed to create a comprehensive online database of books. It is a project of the Internet Archive. Aaron Swartz was the leader of the Open Library’s technical team. The project is now led by George Oates. |
http://openlibrary.org/ |
| University of California, Berkley, Libraries catalogues | http://www.lib.berkeley.edu/Catalogs/index.html |
| Harvard Libraries | http://lib.harvard.edu/ |
| National Library of Australia | http://catalogue.nla.gov.au/Help/Work |
| Leiden University Catalogues | |
| Cambridge University Library catalogues | http://www.lib.cam.ac.uk/ |
| British Library catalogue | http://catalogue.bl.uk/F/?func=file&file_name=login-bl-list |
| Oxford Libraries catalogues | http://www.lib.ox.ac.uk/libraries/libcats.html |
| National Library Singapore catalogue | http://www.nlb.gov.sg/ |
| Heidelberg University Library Catalogues | http://www.ub.uni-heidelberg.de/Englisch/ |
| Berlin Library | http://www.berlinlibrary.org/ |