The jDocs viewer is a free downloadable application that allows people who you wish to distribute and share data to view and use jDocs forms that has been generated from jDocs Builder.

More than PDF
PDF is a well known medium for distributing documents and forms, but has the limitation of being expensive to collect the data produced from the forms and is non interactive.

jDocs forms are interactive allowing the user to changes its views how it desires and can if security is given to remove and replace the XML data that makes up the form.