This is a list of some of the websites that I have made (and where available, where to find the source).

Website Description Source (if open-source)  
AHKGen.com A Configuration based generation utility for Autohotkey scripts github.com/mshafer1/AHK-Generator  
quizgen.musictheorypractice.net A generic music theory quiz generator (with save and reload) https://github.com/mshafer1/quizgen_music_theory  
themepuzzler.musictheorypractice.net Shuffle the pieces of a theme and guess the order (either completely random, or with a set order for a class or workshop) github.com/mshafer1/themepuzzler  
passagepredictor.com Encouraging Bible students to dig in early to try to predict what passages will be used in a sermon < closed source >