With this app You can create any:
You can use some output format:
Atom | Csv | Html | Json | Rss | Xls | Xlsx | Xml
For debugging You can use Debug format which show all mysql requests and all object.
Products Feeds You can use for export products to any online products catalog (Google Merchants Centre, Heuréka, Zboží, ...)
Orders Feeds You can use for connections to some ERP (Cesar, Helios, ...)