Rocketlawyer is also an option, but I would put it behind legalzoom and Perfectdocs. I have used legalzoom and it worked out. I found the forms at  to be a little bit better than legalzoom because they contain better instructions on how to complete those forms.   This post was edited to remove a link. Please review our Community Best Practices for more information about how best to participate in our online discussions. Thank you.

Most of the low cost on-line incorporators just provide the forms for you and then register in your state.  That being said, as a corporation you will need corporate minutes, articles of incorporation, and a certain amount of structure to your paperwork that will be time consuming and difficult to figure out by yourself.   My first company was incorporated by a local attorney who charged me around $1000.   My second company was incorporated on-line for under $150.  The documents are identical, except for the name of the companies of course.   My first time around the block, I would consider using an attorney to make sure you got it right.  Mistakes can be very costly.   One more thing:  you may want to make sure you are incorporated in your home state.  Otherwise, your company may be subject to additional rules and regulations as a 'foreign entity,' which may cost you more than you are saving by incorporating in a less expensive state.