[vbsteven]

It’s a tool in a developers toolbox. Some use it, some don’t. Similar to the debugger vs printf debate.

These apps can be useful for testing, developing and exploring APIs and they can function as GUI for services that don’t have one.

For example a former client used Postman as a client to perform administrative tasks for which there was no UI yet. Most of these tools have feature to save common request flows and share them with your team.