Information and communications technology has played a major role in libraries. Libraries have now been completely dependent on providing new services to its users based on computer applications. Different computer programs are available for libraries to provide range of services from library automation, library website management, knowledge management, digital library management to document editing. To manage vast amount of digital information, libraries need some computer applications which takes care of their requirements. These applications are generally developed by commercial vendors or are available under open source license terms and conditions. In the present paper, an overview of range of open source software available for various library services. Library professionals can effectively use these software to provide innovative services to their users and without involvement of any of large budgets.
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