I’ve recently started a project on Github called UnREST. It’s a simple Cocoa Touch library for accessing RESTful web resources through an intuitive code interface. I’m aiming to add some more functionality over time (I’m using REST a lot at work), so if you have some cool ideas or feel like hacking, go for it.
Currently it only supports GET and POST requests, since that’s what I mostly use it for. More stuff to come.