We present a novel approach to developing interfaces for multi-application dialogue systems. The targeted interfaces allow transparent switching between a large number of applications within one system. The approach, based on the Rapid Dialogue Prototyping Methodology (RDPM) and the Vector Space Model techniques, is composed of three main steps: (1) producing finalized dialogue models for applications using the RDPM, (2) designing an application interaction hierarchy, and (3) navigating between the applications based on the user’s application of interest.