Goal of the SALSAH-Project is the development of a Web 3.0 application which assists researchers in Arts and Humanities who have to deal with digital sources and linkage. It allows the annotation and linkage of arbitrary digital sources such as digital texts, still and moving images and sound. The implementation is derived from the RDF-datamodel which is modified in order to  comply with all requirements in Arts and Humanities. It is designed to facilitate and encourage collaborative work models.