Hoppscotch : A free, online, open source API request builder
DERI Pipes : Inspired by Yahoo's Pipes, DERI Pipes is an engine and graphical environment for general Web Data transformations and Mashup.
Browser Calories : The easiest way to measure your performance budget.
Anything to Triples : Anything To Triples (any23) is a library, a web service and a command line tool that extracts structured data in RDF format from a variety of Web docu...
