Should I cite the author of software tool or script that I use?

I'm writing a paper for my Ethical Hacking class. In 'hacking', you use a lot of tools written by other people, some of them are mainstream and/or made by big teams, others are less known and made by individuals or small teams.

If I'm using a relatively uncommon software tool for a particular task, a tool that my readers may not know of, would it be courteous/helpful to cite the individual or lead developer of said tool? Would it be acceptable that the reference is just the website, or should I find another article that talks about the tool?

(NB: We use Harvard referencing)