2026: Postman alternative for API testing in three.js projects?

Hey,

I’m working on a three.js project where I fetch API data for things like scene configs and model-related data, and I’ve been using Postman for testing endpoints.

It works fine, but during faster iteration between frontend (three.js) and backend, it starts feeling a bit heavy.

Lately I’ve been looking at a few Postman alternatives in 2026 to see what fits better for this kind of workflow.

I briefly tried tools like Apidog as well it felt a bit more lightweight when switching between API design/testing and sharing requests, but I haven’t used it deeply enough in a three.js context to really judge it yet.

Curious what others here are using.

Do you stick with Postman, or have you moved to something else for API testing in three.js projects?

Threejs doesn’t have apis like that.