Collections, tests and automated checks in Postman

The tool you will actually find open on an engineering team's machines. You file requests into collections, add automated checks, and replay the lot in one click after each change.

Resource: Postman Learning Center, free courses from the vendor. This is the only stop that stays in your working day once the learning is done. File requests into collections from day one: a collection you plan to rebuild in three weeks never gets rebuilt.