Which authors to cite for open source software While I have worked on open source software myself I'm, strangely, uncertain about how to cite it in a paper. I do know how to cite software itself, I'm just uncertain which author(s) to attribute it to.

I've got two programs to cite, one of which is a fork, with different copyrights over different files, not to mention the many unmentioned contributors to that work. 

Do I just cop out and go "main contributor et. al"? And in the case of the fork, do I take the original author of the original software or the author of the fork?
@MadeOfMagicAndWires,
I have worked with open-source software and even using it (Linux).
So citing an open-source software in your journal will require you to check out the main source (repository owner as in GitHub) and cite according to using APA format or the format of citing you are required to use.