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...
Analysis for Windows - Powerful Finite Element Analysis package for 2D and 3D constructions (frames and trusses)
FEMTA - SourceForge presents the FEMTA project. FEMTA is an open source application.
calc4fem - Spreadsheet Template for Structural Engineering (FEA Analysis for beams, trusses, 2D-frames).