The aim of this paper is to describe the main features of the first Cuban Digital Repository network developed by ELINF, the characteristics of each repository, their interoperability and the development of a national harvester system. A descriptive analysis was conducted to characterizes the role of the ELINF project to increase the academic visibility of five Cuban universities through the development of digital repositories in those institutions, as well as their near development until the consolidation of a national network. It also describes tools developed in the framework of the project and lines of work to ensure interoperability between repositories and other platforms. ELINF project has improved the scientific and academic information exchange throw the implementation of institutional repositories to share, preserve and increase the visibility of the information resources produced by the own universities and managed by its libraries, developing the first open access policy in Cuban Higher Education, generating and improving tools for information management, training a group of specialist to support the maintenance and interoperability of platforms. At this moment five Digital Repositories are operating, four of them with international visibility and indexed by Google Scholar and international directories. These platforms have allowed universities to share their scientific outputs with the national and international community in an Open Access environment. DarkAIV (a tool for automatic metadata extraction) was developed to facilitate the document’s load to DSpace.