app (featured in December 2023)
Toasty
(self-nomination, I hope that's allowed)
Toasty is a bot which automatically sends messages in low-activity chat rooms to keep them from freezing, controlled by a nice web interface. I made this out of annoyance at my rooms being frozen and displeasure with the existing antifreeze bot options. It's usable by anyone with 200+ rep on any network site.
