Modern software development is highly knowledge intensive; it requires that software developers create and share new knowledge during their daily work. However, current software development environments are “syntantic”, i.e. they do not facilitate understanding the semantics of software artifacts and hence cannot fully support the knowledge-driven activities of developers. In this paper we present SoWiSE, a Semantic Wiki environment which focuses on the software development domain and strives to address these problems. SoWiSE aims at providing software developers such a tool to ease their daily work and facilitate cooperation, context-aware navigation, ontology-based browsing and searching, concept-based source code documentation and related problem solving.