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.
If by "users" you mean, you and other people that are building the form, then yes, you can sign up for a free account and use it, which we encourage.
That way all of your forms and the data is always accessible to you by logging into your account from any location or over any device, unlike your guest account (guest_53125930876056) which will show you your form only while your cookie session is active.
If it happens that you do not see it by the time you create your account, that is OK, we can transfer the form over (with its data), although our system should do it for you.
To register, you should go to our sign up page here: http://www.jotform.com/signup/
If by "users" you mean people that submit your form, then no, they do not require an account to submit the form nor would get one created if they submit your form.