IR+ is an institutional repository software project. It is a fully featured digital repository management solution that is easy for users to understand and manage. Its goals are to meet the needs of any organization that needs to author, publish and preserve digital information.
Terrier is a highly flexible, efficient, and effective open source search engine, readily deployable on large-scale collections of documents. Terrier implements state-of-the-art indexing and retrieval functionalities, and provides an ideal platform for the rapid development and evaluation of large-scale retrieval applications. Terrier is written in Java, and is developed at the Department of Computing Science, University of Glasgow.