Paper introduces the software PSA (Program for Structural Analysis), developed to analyze the behavior of space framed structures for various load combinations. Results obtained include section forces (bending moment, shear force at various sections of member), support reactions, node displacements, etc. in the analysis. The software is intended to generate a detailed report of calculations at various steps of analysis, which is lacking in commercial software. Access to this analysis steps may be used for educational and research purpose. Paper also discusses on various technical and programming implementations adopted in the development of software.