This paper throws lights on how discovery solution works and provides the potential features of Discovery Solutions in context to Library environment. It also evaluates the available web discovery services offered by eminent organizations and also provides a practical analysis of available library discovery tools in context of the present­day explosion of available open search engines on the Internet. The focus of analysis include how discovery tools are expected to manage library collections, provide access to scholarly information content, as well as other factors. It discusses some of the possibilities regarding how these technologies, methodologies, and products might be able to adapt to changes in the evolving information landscape in scholarly communications and to take advantage of new technologies, metadata models. It also throws light on Indian scenario of web discovery service.