1. Specialised packages
Specialised packages refers to special application programs which are fully documented for the performances of a particular problem. They can be statistical or quantitative for example, spreadsheet, accounting packages, graphics, design or clerical packages.
These packages assist the user of a Decision Support System in analysing the different courses of action regarding a particular problem. They are particularly important during the analysis stage the system so that various courses of action can be recommended.
Specialised packages can also be used during sensitivity analysis during decision-making.
These packages also help decision makers in analysing various decision models, for example, through variance analysis, linear programming and regression analysis system.