While there are many tools that can depict a business process on any level of detail, there is lack of tools to depict and/or design process architectures - an interconnected set of business processes that exist or are to be introduced in an organization. The FEM toolkit bridges this gap by providing a tool for process architects to discover the process architecture of an organization as-is or to develop a new one. The FEM toolkit facilitates this by providing means to discover or develop a so-called Fractal Enterprise Model (FEM) for an organization. FEM depicts interconnections between the business processes in an enterprise by connecting them to the assets they use and manage. Assets considered in the model could be tangible (buildings, heavy machinery, etc.) and intangible (reputation, business process definitions, etc.). The FEM toolkit has been developed with the help of the metamodeling environment ADOxx. It was successfully used in a number of practically oriented projects and for teaching purposes.