Free Form, means to not conform to a particular structure or shape.
Html forms is a webform on a webpage that helps users to put data that is then transferred to a network server for processing or computing. The forms can resemble paper forms because the user or people fill the form out online.
Autofill, is a function on different computer programs or applications which fill in the online form or fields automatically. This provides a less time consuming action for the user. Many Google and Explorer toolbars have this feature, for people to use. This makes the writing part of their jobs easier. There is less writing involved.
Typeform, makes sharing of information more conversational and easy for the user. This is a platform that is on the web and can be used to create apps, surveys and anything in between. There is no reason to write lines of code also.
Amazon Price (Software):