I'm a huge fan of "Paw" for OS X (<a href="https://luckymarmot.com/paw" rel="nofollow">https://luckymarmot.com/paw</a>). After you construct your query, it generates the equivalent code for curl, Objective-C (NSURLConnection or AFNetworking), Python, jQuery, or several others. It also now integrates with Mashape so you can download preconstructed libraries of API calls.<p>Disclaimer: I have no connection with Paw's developers - I'm just a very happy user.