truss-me 
Provides basic construction and analysis capabilities for trusses.
Construction
Add joints and members, and vary the material and cross-section of specific members in the truss. There is also an option to create truss from .trs file
Analysis
Calculate mass, forces, and the factor of safety (FOS) against buckling and yielding. Create a truss analysis report that provides approximate design recommendations
Acknowledgements
Force calculations based on a MATLAB function by Hossein Rahami.