This paper presents some applications based on free software that allow some steps related to knowledge management, these can be implemented in organizations own servers or new hosting services in the cloud as a Nixiweb for creating various scrip free and without advertising becoming an excellent starting point for communities that wish to implement practical inexpensive tools and great popular acceptance. For each KM activity some GNU free tools are discussed while additional ones are referred to in the existing manuals. At several points views in this paper links with other contributions from the Asian Productivity Organization APO, as is also done the other way round. It is concluded that there is already a comprehensive set of tools available on the web, but for some peculiar aspects of knowledge assets there are not still development yet.