Inspired by Yahoo's Pipes, DERI Pipes is an engine and graphical environment for general Web Data transformations and Mashup. Supports RDF, XML, Microformats, JSON and binary streams.
DERI Pipes, in general, produce as an output streams of data (e.g. XML, RDF,JSON) that can be used by applications. However, when invoked by a normal browser, they provide a end user GUI for the user to enter parameter values and browse the results.