What are some alternatives?
When comparing Etabs and Estru3D, you can also consider the following products
RISA-3D - Structural Analysis and Design
SAP2000 - The SAP name has been synonymous with state-of-the-art analytical methods since its introduction...
RISA-2D - Structural Analysis and Design
midas Civil - Structural Analysis and Design
SkyCiv Structural 3D - SkyCiv Structural 3D is a powerful structural analysis and design software on the cloud.
MASTAN2 - Interactive structural analysis program that provides preprocessing, analysis, and postprocessing...