Knowledge and competences capital of an organization is increasingly crucial. The organization survival depends mainly on its capacity to access new knowledge, to diffuse its competences quickly and to exploit and preserve its expertise fields efficiently and durably. Thus today, organizations are aware of the necessity to become learning organizations and to maximize organizational learning. Within the approach MEMORAe, we are interested in these learning forms. They are connected to the knowledge management practices and in this paper we present why and how we developed a learning environment based on the concept of learning organizational memory. This environment is a web platform using semantic annotations and Web2.0 technologies in order to organize, share and capitalize organizational competences, knowledge and resources.