I took a look. What level of critique do you want? I think with a decent amount of effort, you can out-compete (as a product) all existing solutions except Hel

I took a look. What level of critique do you want? I think with a decent amount of effort, you can out-compete (as a product) all existing solutions except HelloSign. However, I would expect to run into serious issues convincing companies to switch. You would probably want to specifically target the new company / tech-savvy startup market, which I think are very underserved by the painfully antiquated leaders (DocuSign, RightSignature), who are targeted towards people who feel more comfortable with "enterprise"-style solutions. Our major issues were: - We needed to provide our own styling, etc, for integration on a responsive website. Existing iframe solutions used the provider's styling, and did not work well on mobile. - We expect to send out many more documents than get signed; thus, HelloSign's per-API cost would be to expensive for us.