I downloaded an awesome iPhone app called Pageonce where I can add almost all of our bills like cable, our cellphones, auto insurance (which is generally the bill I forget about until it’s almost due), credit cards, bank accounts… pretty much everything. They do NOT, however have support for our local water, trash, and electric utilities. I understand these companies are probably fairly small in the grand scheme of things, but I think the option to add custom bills that you update yourself would be a nice feature.
Another great thing about the app, is that it will email you and display a badge when there is a change on any of your accounts. This is really handy because it never hurts to have an extra reminder. Also, if you’re paranoid like me, there’s an option to require a pin number upon opening the application.
Best of all? It’s free!