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.
Here is an example - in User Guide
You can change the URL by creating a custom URL. The output will be http://www.jotform.com/username/custom_name
Here's a guide on how to create custom URL of a form.
You can also use custom domain names with JotForm. Here's a guide on how to use custom domains with Jotform.
Hope this helps. Let us know if you need any help.