Pipes : Pipes is a powerful composition tool to aggregate, manipulate, and mashup content from around the web.
localForage : localForage is a handy library that improves the offline experience of your web app by using asynchronous storage (via IndexedDB or WebSQL where avail...
kimono : Turn websites into structured APIs from your browser in seconds
Hoppscotch : A free, online, open source API request builder
OpenCalais : Calais is a rapidly growing toolkit of capabilities that allow you to readily incorporate state-of-the-art semantic functionality within your blog, co...
Inspired by Yahoo's Pipes, DERI Pipes is an engine and graphical environment for general Web Data transformations and Mashup.