You can analyze planar frames, continuous beams, trusses, cantilevers, and so on. The design is based on European building codes (Eurocode 2 - design of reinforced concrete structures and Eurocode 3 - design of steel structures).

Internal forces and displacements are calculated using the finite element method. A graphical interface lets you draw the structure and design load cases and actions.

This supports true second order theory. It solves simple problems quickly with unlimited undo/redo capabilities. It even has a unit conversion feature.