If you aren't having cash flow issues, then just setup auto payments. Most companies do auto ACH for no charge, and even some offer a discount for it. My car loan company gave me a lower interest rate to do the auto ACH, not that it made that big of a difference but a quarter of a point was still nice.
If you have cash flow issues sometimes, then setup the base ones you can on the auto ACH, and others set on a calendar reminder. My bank lets me schedule the payments but then it reminds me before they come due so I can either adjust them or let them stand. I love that cause it makes it easy to work with those times when there is a cash flow crunch and I have to move a payment out a little or something.
One other point, to protect my credit, I have my credit cards (all 2 of them), setup to make at least the minimum payment + $25 just so I can't fuck up and miss them. I did that when I was younger a few times and man it sucks. But if I want to pay more then I just log in and make an "extra" payment which makes life easy.
Last thing, I don't do it, but I have a friend that has a specific account that he puts only X dollars in each month through his paycheck deposit. So X goes into that account and the remainder goes into his main account (almost every payroll department supports split deposits). He then has all the auto payments come out of the one account where he puts the X dollars into. He likes this because if one of the vendors has something hacked his risk is limited to only what was in that account, plus he never has to think about those payments. Just another idea for those worried about vendors having their primary account information, personally it makes sense to me I just have been too lazy to set that up.