Also used Clerky, it's great. Just fill out a form and give them a credit card and it handles all the paperwork, generates incorporation documents & bylaws, files with the relevant secretary of state, and gives you instructions for what to do afterwards.
I've talked to a couple lawyers since that are familiar with the Clerky paperwork, and they said that legally it's pretty solid as long as you're doing something fairly standard. If you've got complicated ownership structures (converting from an LLC, founders quitting or joining after incorporation, spinning off IP that might not be yours) you probably want to talk to a lawyer, but for the standard situation where a bunch of friends get together, can all agree on ownership percentages, and start a company from a clean slate, Clerky's great.
Stripe Atlas won't help you start a company with ethics baked into its mandate so that's worth considering. Clerky will help you to incorporate as a Public Benefit Corporation if that is of interest.
I've talked to a couple lawyers since that are familiar with the Clerky paperwork, and they said that legally it's pretty solid as long as you're doing something fairly standard. If you've got complicated ownership structures (converting from an LLC, founders quitting or joining after incorporation, spinning off IP that might not be yours) you probably want to talk to a lawyer, but for the standard situation where a bunch of friends get together, can all agree on ownership percentages, and start a company from a clean slate, Clerky's great.