Knowledge Management (KM) is gaining more an more interest among high-ranked executives in organizations of diverse kind Consequently, many systems have been developed claiming they are Knowledge Management Systems(KMS). In this work we present a KMS that tackles some problems most existing KMSs sit have not: Ubiquity, Collaborative Knowledge Management, Context-sensitivity It also tackles the problem about privacy and fears people may have to reveal the knowledge they posses. The system supports its user in the processes of knowledge creation, validation, distribution and use.