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.
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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.
There are other alternative apps provided on that guide, you can also find it below.
2. iFrame Apps
You can try these apps. If none of this helps, let us know so we'll try find one for you. Or you can do a quick google search. :)
No. 1 iFrame Wrapper is out of service I think
It seems you are right, you can try out others.
Here's another one: http://iframehost.com/