Galladite

I don't really have any issues with ren'py, but I think it's overrated. ONScripter-EN is easy, functional, free, well-documented (at least for command reference), and has stood the test of time. That isn't to say that ren'py doesn't share some of these features, but ONScripter-EN is a perfectly capable engine.

Hey there. I'm making a tutorial for ONScripter-EN aimed towards people with only a very little amount of programming experience. It's currently a collection of text files, and while I'm going to turn it into a website, for now the content is done (although sections may be revised later). It can be viewed in its current state here.