Decision Support Systems (DSS) provide a framework for integrating database management systems, analytical models, and graphics, in order to improve decision-making process. The decision support system concept was extended to the spatial context by integrating GIS and DSS into spatial decision support systems (SDSS). Because of lack of computer software to develop user friendly interfaces in the past, GIS have not been used as part of SDSS. Instead GIS have been used to generate and store spatial data which were then used as inputs for the analytical models. GIS was used independently to display maps by inputting results of the analytical models.

ASSAC has developed a niche in the development of Web based DSS. A few of the DSS which are currently in operation are as under:

1. Sarva Siksha Abhiyan, Assam DASHBOARD
2. CRIME GIS DASHBOARD
3. RUSA WebApp