There is some software you would need to add to the server and if you are being hosted, then the host more than likely will not allow for the installation of the software.
A couple I know of and just a matter of coding it to suit after it is installed on the server are:
I have been using activePDF for a year now and it works great. We use it for populating a PDF employment application after they have submitted it using an online application feature I implemented at our agency web site. I have encountered zero problems using it and it has an extremely low learning curve.
On the same subject, has anyone ever seen any server components that can open a PDF for editing?
I think that is only provided in the full product of Adobe Acrobat. We create "fillable" forms at my agency all the time. It allows a person to type text in the fields of the pdf document and then print it. The only problem with this is they can not save the entered data with the form if they only have Adobe Reader so they must complete the form to print. This was the number one reason I decided to purchase activePDF. I can take a form submission and write it to a database. The user can decide to come back and finish it later and then when they are done, the results are queried from a database and populated into a PDF form.