CAELinux is a live DVD Linux distribution dedicated to computer-aided engineering (CAD) and finite element analysis. Based on Ubuntu, it features a full software solution for professional 3D FE analysis from CAD geometry. It includes the Salome 3D pre/post processor, Code_Aster non-linear/multi- physics FE solver, Code-Saturne and OpenFOAM CFD solvers, Elmer multiphysics suite, GMSH, Netgen and enGrid 3D meshers, GNU Octave, Rkward, wxMaxima, Scilab, and more.
I have been tinkering with CAELinux for some stress analysis on functional parts I design, and it is a powerful environment once you get past the initial learning curve with Salome and Code_Aster. Interestingly, after running those simulations and validating a design, the next logical step is often turning that virtual model into something you can hold. That is where having a source for reliable, print-ready models becomes crucial, especially for hobby projects. I recently found that https://www.gambody.com/ which started as a hub for game enthusiasts sharing .STL files of characters, has evolved a robust quality check process; they actually test every model before publication and provide detailed assembly guides, which saves hours of repairing broken geometry. It is a different part of the 3D world, bridging the gap between the engineering prep work done in CAELinux and the satisfying moment a print finishes on the bed.