Copac (originally an
An acronym is a word or name formed from the initial components of a longer name or phrase. Acronyms are usually formed from the initial letters of words, as in ''NATO'' (''North Atlantic Treaty Organization''), but sometimes use syllables, as ...
of Consortium of Online Public Access Catalogues) was a
A union catalog is a combined library catalog describing the collections of a number of libraries. Union catalogs have been created in a range of media, including book format, microform, cards and more recently, networked electronic databases. P ...
which provided free access to the merged online catalogues of many major research libraries
and specialist libraries in the United Kingdom and Ireland, plus the
The British Library is the national library of the United Kingdom and is one of the largest libraries in the world. It is estimated to contain between 170 and 200 million items from many countries. As a legal deposit library, the British ...
National Library of Scotland
The National Library of Scotland (NLS) ( gd, Leabharlann Nàiseanta na h-Alba, sco, Naitional Leebrar o Scotland) is the legal deposit library of Scotland and is one of the country's National Collections. As one of the largest libraries in th ...
National Library of Wales
The National Library of Wales ( cy, Llyfrgell Genedlaethol Cymru), Aberystwyth, is the national legal deposit library of Wales and is one of the Welsh Government sponsored bodies. It is the biggest library in Wales, holding over 6.5 million bo ...
. It had over 40 million records
from around 90 libraries, representing a wide range of materials across all subject areas. Copac was freely available to all,
and was widely used, with users mainly coming from
Higher education is tertiary education leading to award of an academic degree. Higher education, also called post-secondary education, third-level or tertiary education, is an optional final stage of formal learning that occurs after complet ...
institutions in the United Kingdom, but also worldwide.
Copac was valued by users as a research tool.
Copac was searchable through with a
A web browser is application software for accessing websites. When a user requests a web page from a particular website, the browser retrieves its files from a web server and then displays the page on the user's screen. Browsers are used o ...
Z39.50 is an international standard client–server, application layer communications protocol for searching and retrieving information from a database over a TCP/IP computer network, developed and maintained by the Library of Congress. It is c ...
client. It was also accessible through OpenURL
Search/Retrieve via URL
Search/Retrieve via URL (SRU) is a standard search protocol for Internet search queries, utilizing Contextual Query Language (CQL), a standard query syntax for representing queries.
SRU, along with the related Search/Retrieve via Web (SRW) serv ...
These interfaces could be used to provide links to items on Copac from external sites, such as those used on the Institute of Historical Research
Copac was a Jisc
service provided for the UK community on the basis of an agreement with Research Libraries UK
The service used records supplied by RLUK members, as well as an increasing range of specialist libraries with collections of national research interest. A full list of contributors is available
, the Royal Botanic Gardens, Kew
The Honourable Society of the Middle Temple, commonly known simply as Middle Temple, is one of the four Inns of Court exclusively entitled to call their members to the English Bar as barristers, the others being the Inner Temple, Gray's Inn ...
Institution of Mechanical Engineers
The Institution of Mechanical Engineers (IMechE) is an independent professional association and learned society headquartered in London, United Kingdom, that represents mechanical engineers and the engineering profession. With over 120,000 member ...
In July 2019, Jisc replaced COPAC with Library Hub Discover.
The online public access catalog (OPAC), now frequently synonymous with '' library catalog'', is an online database of materials held by a library or group of libraries. Online catalogs have largely replaced the analog card catalogs previousl ...
The Serials Union Catalogue, or SUNCAT, was a freely available source of information about serials holdings in the United Kingdom, for the UK research community.
For both electronic and print serials, including academic journals, periodicals, ne ...
* Talis Group
Academic libraries in the United Kingdom
Bibliographic databases and indexes
Databases in the United Kingdom
Higher education in the United Kingdom
Library cataloging and classification