Have User Save Form Entries?

We’ve been looking for a plugin that will allow our end users to save the forms that they send to us. So far, we’ve only found ones that will show the saved form to the admin user. What is there available for allowing the end users to save their own forms?
Basically, the info they fill out each time (Name, address, phone, etc) we want them to be able to save that and not have to enter every time.
Thank you!