1) validation (length, null, alphanumeric, alphanumericanduppercase, etc.) common elements (date, phone number, email [allows for + e.g. whatever+label@gmail.com is a valid email], country [supply full list - https://gist.github.com/Keeguon/2310008], states

2) Common Forms - contact us (name, email message) - contact (name, phone, email) Use basic types (number, string, date)

3) Install/Embed - 1 line of JS e.g. <script src="http://www.domain.com/form.js"></script>

4) Export to CSV, JSON, Excel

5) s3 integration (append to file)- (upload file)

Good Luck - Hope that helps :)