Mockable might be a bit more popular than CurlHub.io. We know about 1 link to it since March 2021 and only 1 link to CurlHub.io. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
CurlHub — Proxy service for inspecting and debugging API calls. Free plan includes 10,000 requests per month. - Source: dev.to / almost 3 years ago
I'll assume it's the latter. Mocks are quick apis you can set up (mockable.io is a popular one) in a couple minutes that can be configured to provide an endpoint and a static response that you tell it to. Using that, you can hit the mock endpoint with your front end code. If you do it right and make a constant, and collaborate on the endpoint and object with the BE dev, the only thing you'll have to change when... Source: almost 3 years ago
Request inspector - Debug web hooks, http clients
Beeceptor - Unblock yourself from API dependencies, and build & integrate with APIs fast. Beeceptor helps you build a mock Rest API in a few seconds.
MockServer - Easy mocking of any system you integrate with via HTTP or HTTPS.
WireMock - WireMock - a web service test double for all occasions.
RequestWatch - Inspect and debug HTTP requests
HttpMaster - HttpMaster is a professional software tool for testing and debugging HTTP applications, primarily aimed at REST API applications and web services.