The links in Community Tools don't work. I found horusofoz on Github but I have no idea what to do with the pum stuff there. The perchance generator is for "GUM+SUM+PUM" but currently says it only offers prompts for SUM, although they probably work just as well for all three.
Viewing post in Plot Unfolding Machine for Solo RPG comments
Thanks for letting me know. Yes, horusofoz told me he can't maintain his webapp anymore. Perchance has only this one now: Game Unfolding Machine ― Perchance Generator