Other free software:

1)Most of free software below are available for commercial use.
2) Share and change this page as you want.
3) Google all these names and links to find more information.
For Math
Maxima, wxMaxima and related projects (open-source symbolic&numerical)
CmathOOoCAS (open-source symbolic&numerical for spreadsheets)
Mathcad like software for Writer
Mathcad like software for Writer
*** has serios bugs (crashes program when saving inserted images)
Smath Studio (standalone mathcad like freeware)
**** Generally I don’t like this philosophy
(but can be good for old mathcaders)
Professional numerical Software
R, RkWard – Statistical software, open-source
For Structures
Beam and Shell Elements – for Structural Engineers
Wolsink FrameWork (best  freeware for beam elements)
****** Try it, it’s rare case when the good engineer and programmer is in one person
LISA-FET (multiphysics software with classical GUI)
***** Demo up to 1,300 nodes can be used for commercial. Very liberal license and good cheapware
Frame3dd (beam elements)
LinPro (2D frames, static &dynamic)
MASTAN (nonlinear analisys)
Multiphysics/mechanical software
CalculiX – A Free Software Three-Dimensional Structural Finite Element Program
****** Nice and Good documented software
***** ISO Certified industrial software
(but in French) *** Can be useful for soil problems
IMPACT – Explicit dynamic analysis
**** LS-Dyna like software
**** Good but too much science
Also see
why 88???
Free Meshers
2D-CAD /dwg
Google it, the official website is dead
**** Simple good dwg up to 2005
ProgeCAD Smart – free last DWG but for home/student use only
Google It
? Generally it’s not free
but home/cheapware
Nanocad – free with registration, can’t say more
Salome-Platform – Classical Industrial Software (OpenCascade based)
For Windows
here, here and here for VMWare
***** This is classical concept of 3d CAD
*****  good for simple models
Narocad (.NET Opencascade based)
*** can be good for dxf2 iges,step conversion
For Programming
Delphi-like multiplatform
****** It’s the Best Free RAD for Programming
Rapid-Q Basic, RQ-Work
*** See above and learn pascal
Just for Fun (simulators)
Numpty Physics