Whether you’re just learning how to code, you’re studying computer science or you’re a well-seasoned Mac developer, these three apps are sure to help you in your work. I have an app that adds a whole slew of new features to the Xcode Simulator, one that makes it easier managing packages in Homebrew and a better way to download and install Xcode.
All of these tools are, themselves, open source. There are links to each GitHub repo where you can learn from them and compile them yourself.