Exercise: To cite, or not to cite, that is the question...

Suppose you are writing a paper on your latest research and are putting together the reference list. During your research you have used all the software mentioned below.

• Ubuntu - Operating System ()
• Microsoft word - text editor (used to write the paper, take notes)
• Git - Version control software ()
• Numpy - Python math library (used in nearly all python-based research software)
• ESMValTool - Diagnostic tool/library for Earth System Models (Used in many climate research projects)
• ClimAnal - Your own domain specific python library (defines various analytical functions that you used in your climate research)
• The original code on which you based your library ClimAnal
• Your own local python script, used to execute the analysis

Which software would you cite and which not? Why?