Surge for Mac - Advanced Web Debugging Proxy for Mac & iOS
Microsoft Visual Studio - Microsoft Visual Studio is an integrated development environment (IDE) from Microsoft.
Charles Proxy - HTTP proxy / HTTP monitor / Reverse Proxy
Visual Studio Code - Build and debug modern web and cloud applications, by Microsoft
HTTP Headers - HTTP Headers allows you to quickly see the HTTP header information for the current URL.
Xcode - Xcode is Apple’s powerful integrated development environment for creating great apps for Mac, iPhone, and iPad. Xcode 4 includes the Xcode IDE, instruments, iOS Simulator, and the latest Mac OS X and iOS SDKs.