Many efforts have been made in the last two decades to manage knowledge in organizations, especially tacit knowledge which is difficult to transfer to others as contrary to explicit knowledge. Organizational learning plays a great role in capitalizing such expertise in organizations. Large enterprises can spend high budgets on the organizational learning process which is not the case in Small and Medium-sized Enterprises (SMEs) where organizational learning is not supported due to the missing of standardized and codified technical supports. So there is a special need for SMEs to organize their knowledge and to facilitate the access of information. In this paper, we present the Organizational learning and its specifications in SMEs. We also present TOVE and Enterprise projects from which we defined a semantic model specially dedicated to SMEs. We explain the choice of the MEMORAe organizational memory platform to manage knowledge in SMEs.