I don't use tickets. To me, a ticketing system is nothing but a detailed up-front plan, waterfall at it's worse. If I see something that needs doing, I just do it. I also don't use backlogs for the same reason.
@allenholub how do you keep track of work that you know you need to do (or want to do?) without overloading your brain?
I use OmniFocus for my personal projects but what about collaborative projects