If you are using Laravel or Symfony for comparing http status codes eg $status_code = Response::HTTP_NOT_FOUND you might find this library helpful $status_code = Http::NOT_FOUND - it's a little shorter, and the whole RFC description of the status code is in the docblock so you don't have to google what it means.

Makes it easy to visualise and construct custom HTTP requests to test with any RESTful web service. Syntax highlighting, custom headers and construct POST or Put body via raw input.

"ASIHTTPRequest is an easy to use wrapper around the CFNetwork API, makes some of the more tedious aspects of communicating with web servers easier. It is written in Objective-C and works in both Mac OS X & iPhone apps. It is for basic HTTP requests & interacting with REST-based services (GET / POST / PUT / DELETE)."