| Boa | a cross platform IDE for Python and wxPython |
| ECLIPSE | an IDE for Java and other languages |
| Emacs, Xemacs | powerful general text editors |
| Gap | Group Theory software |
| Gdb | GNU debugger |
| GCC | the GNU Compiler Collection suite for compiling C/C++/Objective C/Ada |
| Gforth | a forth implementation |
| Gimp | the free graphics and imaging toolkit |
| Gnumeric | a very capable and reliable spreadsheet |
| Kile | Latex IDE |
| Kstars | astronomical viewing software |
| LAM | a parallel communication library |
| MPICH | a parallel communication library |
| NetBeans | IDE for Java |
| Octave | numerical linear algebra solver, similar capabilities to Matlab |
| OpenOffice | office suite with word processor, spreadsheet, drawing, presentation |
| Pearl | interactive script interpreter |
| Python | object oriented interpreter |
| QIDE | integrated development environment for C, Eiffel |
| Quanta | html file editor |
| R | a comprehensive statistical package |
| Scilab | numerical computation software |
| Xmaxima | symbolic computation software |