Abstract
Self-organized reuse of artifacts from software and system development, using the lightweight Wiki-Technology, promises a sustainable preservation and availability of business-critical information. However, due to the organic, sometimes chaotic growth of content inside a Wiki, additional support for structuring the knowledge and finding interrelated useful content is needed. The enhancement of Wiki content with ontologies - named semantic Wikis - can solve these problems. The application of such semantic Wikis and the development of reasoning mechanisms for software engineering is subject of the project RISE (Reuse in Software Engineering).