Free math and stats programs ============================ - Numerical - `Octave `_ - `R `_ - `XPP `_ - `SciLab `_ - `ANA `_ - `Rlab `_ - Graphical - `GnuPlot `_ - `KSEG `_ - `VTK `_ - Symbolic - `Maxima `_ - `YACAS `_ - `CoCoA `_ - `KANT/KASH `_ - `MuPAD `_ - `PARI-GP `_ - `GAP `_ - Misc. - `GRASS `_ - `Khoros (free for students) `_ - `CVIPtools `_