Abstract
Enterprise modelling focuses on the construction of a structured description of relevant aspects of an enterprise, the so-called enterprise model. Within this contribution we describe a wiki-based tool for enterprise modelling, called MoKi (Modelling wiKi). It specifically facilitates collaboration between actors with different expertise to develop an enterprise model by using structural (formal) descriptions as well as more informal and semi-formal descriptions of knowledge. It also supports the integrated development of interrelated models covering different aspects of an enterprise.