Graphical 2D Frame Analysis is a free and open-source structural engineering software for analysing 2D frames, portal frames using stiffness and matrix method. The project is written in C#, C sharp and available with full source code on GitHub and SourceForge. Ideal for students, teachers in civil engineering and structural engineering, Educational, graphical structural analysis with full source code. Feature includes Axial, shear, bending moment, displacement, absolute displacement diagram, graph with values and table with values. ...