Author here!<p>What can you do with it:<p>1. String together Unix-like text processing functions into a text processing pipeline.<p>2. Share said pipeline with friends and co-workers through a transparent link.<p>3. Since the functions are encoded in the URL, you can even compose functions without getting on the website! Just start typing a link: www.textpiper.com/grep?total/col?2&3/sort?asc/replace?dollars=yens<p>4. Your data is safe since it doesn't get out of the browser, but I'm aware that composed URLs could get logged. In future I'll add opaque URL.<p>It's very much a prototype and a work in progress, and as you can tell already, my UX skills leave a lot to be desired. Feedback is very much appreciated!