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.
Please note that we have cluster of servers with network best practices which is capable to handle any spike in network traffic. Any number of users can simultaneously access the form and submit it.
Do try it out and get back to us if you have any trouble.