I've seen quite a few Postman alternatives pop up recently (quite curious what's the reasoning behind that?). Currently I'm mostly using Hoppscotch - also open-source with pretty sweet UI, and Thunder Client in VS Code.
That said, I'd consider switching for type-safety (or more specifically auto-completion) if there was an ability to e.g. import existing OpenAPI schema and automatically pick up the types.
That said, I'd consider switching for type-safety (or more specifically auto-completion) if there was an ability to e.g. import existing OpenAPI schema and automatically pick up the types.