Plone store form inputs in a lightweight way
One approach is to create a browser view that accepts and retrieves JSON data and then just do all of the form handling in custom HTML. The JSON could be stored in an annotation against the site root, or you could create a simple content type with a single field for holding the JSON and create one per record. You'll need to produce your own list and item view templates, which would be easier with the item-per-JSON-record approach, but that's not a large task.
If you don't want to store it in the ZODB, then pick whatever file store you want - like shelf - and dump it there instead.
I need to store anonymous form data (string, checkbox, FileUpload,...) for a Conference registration site, but ATContentTypes seems to me a little bit oversized.
Is there a lightweight alternative to save the inputs - 
SQL and PloneFormGen are not an option
I need to list, view and edit the data inputs in the backend...
Plone 3.3.6
python 2.4
Thanks