This paper examines Online Public Access Catalogue of MPKV University Library, Rahuri. OPAC is an information retrieval system, has revolutionized access to bibliographic information through search capabilities such as keyword searching, Boolean searching, truncation, proximity searching, and item identity number searches. The paper discusses various aspects of OPAC such as how to search, options of OPAC use etc., application of open source software (Koha) as a form of resource sharing tool and a single authoritative source of MPKV University library resources