Homebrew (Brew) is a free open-source package manager that allows apps and software to be installed on macOS according to the user's preference. It has been recommended for its simplicity and effectiveness in saving time and effort. The famous description is "The missing package manager for macOS".
iTerm2 is a terminal emulator that is highly customizable and replaces the default Terminal. It has a feature set will improve your development.
The free source code editor Visual Studio Code, which was significantly developed by Microsoft as an open source project, has made a name for itself in the developer community over the years, beyond the otherwise often rigid boundaries of the Microsoft community. VS Code, as the editor is often abbreviated, is high-performance, easy to use, platform-independent and straightforward without frippery. The code editor offers all the features that many developers need in their everyday code-build-debug cycle.
Postman's functions include a development environment for creating and expanding APIs, a function for sending requests and various options for testing. Postman supports REST, SOAP and GraphQL for requests. Tests are possible via automated testing, and endpoints can also be simulated and the behaviour of the API observed. Documentation can also be created with relatively little effort.