@OpenSciTwente @oscu @oscmaastricht @oscgroningen the following have been useful for me:
- GNU/Linux operating system
- LaTeX for preparing articles
- Octave for making graphs
- Dia for making diagrams
- emacs text editor
- gcc for compiling programs
I think it would be good to raise awareness of the fact that any proprietary software used in a research process is bad for reproducibility, so should be avoided. It should be possible to reproduce your research using free (as in freedom) tools.