What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
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.
Thank you for contacting JotForm support.
How can I create a registration form for my website?
I'm not sure if I understand your question correctly but if you are referring to registration form then we have a lot of registration form templates available. Kindly please check this URL: http://www.jotform.com/form-templates/category/registration
If this is not what you mean then you probably wants to create a membership database where your users can log in with their respective username and password. If so, then that is not possible here in JotForm.
Hope this helps. If not, let us know and please provide more details about your question.