Integration with the Salesforce Document Object
FormTitan is a powerful web form builder that can easily integrate with salesforce document object - it is a powerful Form Builder for Salesforce. Not only does this require no coding skills on your part, but the salesforce connector is seamsless and powerful. Unlike other products, our salesforce connector not only writes to your salesforce document object, but it can also read from them and populate your online form fields instantly. Furthermore, You can read from multiple objects at a time, with or without dependencies and query your objects based on any value from your form. 
About the Salesforce Document Object
Represents a file that a user has uploaded. Unlike Attachment records, documents are not attached to a parent object.
Usage
When creating or updating a document, you can specify a value in either the Body or Url fields, but not both.
Read more about the Salesforce Document ObjectWatch how it works