Here is another open-source alternative: https://github.com/rashadphz/farfalle (Disclaimer: I made it)

> Many WGU students HATE these types of articles, because they undermine the legitimacy of WGU.

What is "these types of articles"? How does this one "undermine the legitimacy of WGU"? Even a cursory skim-through of the article would show that the author worked hard and learned all of the material that they then passed exams on at WGU. They don't make it out to be a "degree mill" in any way whatsoever.