FEMTA is described as 'SourceForge presents the FEMTA project. FEMTA is an open source application. SourceForge provides the world's largest selection of Open Source Software. Easy to use 3D truss analyzer using finite element methods' and is an app. There are more than 25 alternatives to FEMTA for Windows, Linux and Mac. The best FEMTA alternative is Etabs. It's not free, so if you're looking for a free alternative, you could try FRAMEWORK 2D+3D or MASTAN2. Other great apps like FEMTA are SAP2000, Analysis for Windows, Structurix and Estru3D.