rss Factory PRO combines all the abilities of rss Factory FREE Edition with a multitude of professional features. Here is the comparison chart between the two versions:

RSS Factory features	FREE	PRO
•  Categories & Subcategories (unlimited number of levels)
•  Category Management
•  Category Description
•  Category Pathway
•  Related Categories
•  Category Tree within one, two, three or four columns
•  SEF (compatible with Artio JoomSEF)
•  Session based tracking of already readed news (Feeds will appear “unchecked” if they have already been read)
•  easy Language Management
•  automatic unpublishing of erroneous feeds
•  Tiled View
•  List View
•  Tab Titles View
•  Sliders View
•  Draggable divs View
•  configurable display to show in list of feeds the feed name or the source
•  Pagination available for each RSS source
•  Date Format Customization
•  Dynamic Page Titles (SEO)
•  MetaTags
•  FavIcons for feeds (pulled from the feedsite or custom uploaded)
•  Color customization of Overlib Output
•  Font Size customization for Overlib Output
•  replace ">> >>" with custom words
•  Preview of Feeds in Category List
•  customized output styles
•  several configurable display tweaks
•  Automatic Refresh of feeds though a pseudo-CRON process and CRON
•  Refresh of Feeds using AJAX (backend only)
•  Search Mambot (allows you to search through feeds along with searching through content)
•  Refferal verification to avoid hotlinking
•  automatic Install & Uninstall of Module and Mambot
•  Ads & Banner management
•  Back-up utility
•  automatic Version Check
•  Public Support (available on Forum)
•  Extended Support (personal guidance available through our Ticket System)

ETA: mid August 2008.