... We report on the progress of the development of CVcat, an interactive catalogue on Cataclysmic Variables, which is the first application based on AstroCat, a general framework for the installation and maintenance of web-based interactive astronomical databases. ... With the development of the AstroCat software we intend to fill the gap between these two categories by enabling astronomers to set up interactive astronomical catalogues for reduced and inferred data (Fig. ... 2003). ...