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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Yes it is possible, you can limit the form submissions from form builder. Just click on the preferences icon, in form builder. And then from the new popup window, change the status to "Disable on submission limit". And you will get a new text box to limit the submissions.
Also please check the below guide, which explains, how to limit submissions in a form:
If you have any query, or need further assistance, feel free to revert back.