Institutional Repository Software Packages: An Institutional Repository (IR) is an online locus for collecting and preserving in digital form the intellectual output of an institution, particularly a research institution. For a university, this would include materials such as research journal articles (before (preprints) and after (postprints) undergoing peer review, and digital versions of theses and dissertations, but it might also include other digital assets generated by normal academic life, such as administrative documents, course notes, or learning objects. The main objectives for having an institutional repository is to provide open access to institutional research output by self-archiving it and to store and preserve other institutional digital assets, including the unpublished or otherwise easily lost (grey) literature (e.g., theses or technical reports).
IRs are partly linked to the notion of a digital library i.e., collecting, housing, classifying, cataloguing, curating, preserving, and providing access to digital content, analogous with the library's conventional function of collecting, housing, classifying, curating, preserving and providing access to analog content.
There are different softwares for building institutional repositories. Some well known software packages are described bellow
a) Dspace: Dspace was developed by Massachusetts Institute of Technology (MIT) libraries & Hewlett-Packard labs. It runs on Unix or Linux machine and Apache web server, Tomcat servlet engine and the postgre SQL relational database system are required. The software is released under BSD license. Website: http://www.dspace.org/
b) EPrints: Eprints was developed by University of Southampton and released under GNU General Public License. It runs on Unix machine and Apache, MySQL database, Perl language is necessary for its installation and operation. Website: http://www.eprints.org/software/
c) Green Stone Digital Library software (GSDL): The Greenstone Digital Library Software is a suit of Open Source, multilingual software package for building and distributing Digital Libraries. It provides a new way of organizing information and publishing it on the Internet or on CD-ROM. The software has been developed by the New Zealand Digital Library Project at the University of Waikato, New Zealand. Greenstone is supported by the United Nations Educational, Scientific and Cultural Organization (UNESCO) and the Human Info NGO, based in Antwerp, Belgium for spreading the benefits of this software to developing countries. It is released under GNU General Public License and runs on Windows, Linux / Unix machine that have Apache web server, MySQL database and Perl language. Website: http://www.greenstone.org