For testing your applications, it can be useful to have tools to call web urls:

• cURL is installed on OSX by default and can be used from the command line
• PostMan is a really nice desktp app that lets you test HTTP requests

“Postman is a Chrome extension and Mac Desktop app tool that helps developers construct and save HTTP requests. The request builder makes it easier to specify and test API endpoints. You can save, document, and share each request into collections, so you don’t forget the structure of HTTP requests you’ll need to make again. It’s an easier way to build requests than working with cURL. It makes the API querying workflow easier, and enables its users to store common requests and save time from trying to rewrite them from scratch. It’s a great tool to simplify API workflows. “