Postman. It's the only one I've used and it works great for what I need it for. More on reddit.com

One of the options I've found is python requests module (allows for sending http requests) in combination with pytest (test runner and assertions) and I kind of like this approach since it feels like i can do things my way rather than conform to the tool like Postman [emphasis added] You've hit the nail on the head. Once you start to do more complex testing, you will hit the limitations of postman very quickly (and spend a lot of time trying to figure out how to work around them). Using a real programming language and rest client library for automation gives you all kinds of flexibility, but of course, the knowledge requirements are higher--you have to know how to program. Edit: this same issue is true for a lot of no-code and low-code automated testing tools in my experience. To answer your question: here's the situation at my employer, manual testing: Postman load testing: gatling (with Java, not scala) AND postman, but we're phasing out postman for the reason mentioned above; it was great to get some tests up and running quickly but we're already hitting its limitations automated functional testing: Java with RestAssured More on reddit.com

The core issue is tool fragmentation: separate apps for testing (Postman, Insomnia) and documentation cause specs and docs to drift out of sync. This multiple-source-of-truth problem is a major developer pain point. The solution is a unified, version-controlled approach. This is where tools like Voiden come up. It shifts from a workspace-centric to a file centric git native model. It stores API requests, tests, and documentation as plain Markdown.files) in your repo. This means your documentation is the executable test suite, ensuring everything stays in sync and can be version-controlled and reviewed like code. It also has a programmable interface instead of static forms: requests are composed from reusable blocks (endpoints, headers, auth, params, bodies, etc.) that you can structure the way you want More on reddit.com

I would suggest postman More on reddit.com