Postman

We publish our REST API in a public Postman workspace. Importing our OpenAPI file created a collection with every endpoint in a few minutes, and customers can fork it, put their own API key into a variable and try a call before they write any code. What works less well: an imported collection is a snapshot, so when our API changes we have to import the file again, and the free plan's limits for sharing inside a team are tight.

Postman is hands down the best tool for working with APIs. I use it for everything from designing and testing endpoints to documenting and monitoring them, and it covers the entire API lifecycle in one place. The collaboration features make it easy to share collections and work with my team, and the AI-powered tools have genuinely helped me improve API quality and speed up my workflow. It works great whether you're an individual developer or part of a larger enterprise. The only minor downside is that it can feel a bit heavy with so many features packed in, but that's a small trade-off for how much it offers. Highly recommend it to any developer.

I use Postman a lot when testing APIs. I like how easy it is to try different requests and quickly see if the response matches what I expect.