FRAMEWORK 2D+3D - Free Windows structural civil engineering software 2D/3D
Estru3D - SourceForge presents the Estru3D project. Estru3D is an open source application.
MASTAN2 - Interactive structural analysis program that provides preprocessing, analysis, and postprocessing...
Structurix - Analysis of structures based on the principle of the finite element method.
FRAME3DD - Free software for static and dynamic analysis of 3D moment-resisting elastic frames and trusses.
St - Free structural analysis software for PC and Mac