Abstract: World Wide Web has transformed society to ‘knowledge society’. The whole globe is now dependent on WWW. The thirst of precise and most relevant piece of information is flooding the web with vast ocean of data. This data is required to be processed and structured in a consolidated product and for this ‘semantic web’ is the advance tool being used today. Our paper concentrates on the basic concept of ‘Semantic Web’, followed by the ‘goal’, ‘architecture’ and ‘applicability of semantic web services in libraries’. The paper offers a detailed platform for ten most effective services and operations in libraries, to satisfy the information quest of the information seekers. And thus concludes that libraries are the small scale sharing points for the advancement of semantic web in nurturing and in increasing the efficiency of library services.