The researchers who answered the questionnaire and were strongly interested in using the capabilities of FRISCO came from the following fields:

- Computer Aided Design (CAD), Computer Aided Modelling (CAM) and Computer Aided Engineering (CAE).
- Mechanical Systems Design.
- Signal Processing and Filter Design.
- Civil Engineering.
- Fluids, Materials and Durability.
- Robotics.
- Simulation.

The nonlinear problems to be solved appear mainly in two different ways: either as a nonlinear system of equations, or as an optimization problem where the objective function is nonlinear or the feasible set is defined by some set of nonlinear conditions.