In this digital era, academic institutions which are universities and colleges have increasingly recognized the importance of institutional repository. An institutional repository in latest concept for collecting, managing, preserving and disseminating scholarly works created in a digital form by staff and students in individual universities and colleges. The repositories also serve as a comprehensive publications database of the parent organization, which in turn facilitate better management of research knowledge better visibility and wider access, rapid communication of research, long term preservation. In this article mainly discussed on definition, benefits, challenges, Open Source Software and the different types of institutional repositories.

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