JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
We actually have several widgets that will allow your users to sign directly in the form. Here is a link to the list:
Personally, I think smooth signature tends to work the best.
If you have any further questions, let us know and we will be happy to help.