1)   MATruss 1.2
MATruss performs static strength analysis of a structure made up by truss elements. A thoroughly tested and reliable solver analyses the truss model and produces the data needed for design.

 2)   2D Frame Analysis Dynamic Edition 2.0
This application uses a highly flexible, general, finite element method for static and dynamic analysis of multi span beams, 2D Trusses and 2D Frames. It features a powerful, interactive and easy interface.

 3)   3D Frame Analysis Library 1.0
3D Frame Library is a .dll library written in c#.net. It performs many types of analyses including static & dynamic with or without consideration of large deformations etc. It is very powerful, robust and reliable. Easy integration with your project.