Purpose - The paper aims to highlight both major and minor features of the library portal, which empowers users to get access to a wide variety of e-resources with a single sign-on. Design/methodology/approach - The study is mainly based on a review of the literature. It briefly discusses the transition from the library OPAC to the library portal. Findings - A library portal is an extension of the Web OPAC. It continues to improve with the new features and capabilities, some of which may go beyond the library portal. Originality/value - Library portals are changing too rapidly and the information would be out of date within a few months. So the currency of information is the value of this paper.