Sentient - Rex Baker here. Depending on where you are in terms of raising money, it might make sense to go with a big firm on a deferred fee basis (I highly recommend the folks at Cooley), or with a smaller shop like mine. If you contact me through my site (rexbaker.com) I'll be happy to talk through the lay of the land with you. MassChallenge is another great resource as mentioned above. Good luck! -Rex

Check out Shoobx (https://www.shoobx.com). They provide this service (incorporating a company) as well as a host of other services to help organize and set up a company's corporate structure.

Hi there! I work for a firm called New Leaf Legal in Cambridge. We do all our work for a flat fee, which startups love. And we are one of the lowest cost options. Plus we're fun. Check us out! or give us a call at 857-228-8172. --Lindsay

I don't know of any personally but you might have luck reaching out to MassChallenge or one of the startups in its program for a referral.

http://masschallenge.org

Good suggestion. Will do that. Thanks.

http://www.rexbaker.com/ - Rex has helped me negotiate agreements a couple of times and has been very helpful.