Question: I'm looking for an easy way to debug RESTful services. For example, most webapps can be debugged using your average web browser. Unfortunately that same browser won't allow me to test HTTP PUT, DELETE, and to a certain degree even HTTP POST.

I am not looking to automate tests. I'd like to run new services through a quick sanity check, ideally without having to writing my own client.

Answer: 
I've found RequestBin useful for debugging REST requests. Post to a unique URL and request data are updated/displayed. Can help in a pinch when other tools are not available.

<https://requestbin.com/>
You can use fiddler's [Composer](http://www.fiddlerbook.com/fiddler/help/composer.asp) to debug [restful services](http://dotnetninja.wordpress.com/2008/05/02/rest-service-with-wcf-and-json/)..

Updated JD 12 sep 2013: *Rest Builder* is now called *Composer*.