Unlike rival solutions, the Cadcorp SIS IDK is not restricted to serving pre-authored maps, nor forcing users to download plugins to run the application. Nor does it stop real client functional interaction with the server. Time-consuming interim stages are therefore avoided for both developer and users and functional restrictions imposed on the client removed. The Cadcorp SIS IDK is a truly a thin-client interactive GIS, not merely a map publishing tool. A major advantage also lies in the ability to display all of the standard data formats read by all other Cadcorp SIS products.
Most competitors depend on translation to a dedicated web format to allow data serving and display.
The IDK consists of an ASC 5 user licence plus a copy of Map Modeller . Universal access to spatial data via Netscape Navigator or Internet Explorer. - Scalable licensing allows managed growth.