WireMock : Free and Open Source tool for building mock APIs. Create stable development environments, isolate yourself from flakey 3rd parties and simulate APIs t...
npoint.io : JSON storage bins with schema validation
Grafana k6 : Grafana k6 is an open-source, developer-friendly, and extensible load testing tool. k6 allows you to prevent performance issues and proactively improv...
Motty : Motty provides the simpler way to test your client services.
It is a web application which gives you ability to create your own custom responses.
So y...
httpbin.org : A simple HTTP Request & Response Service.
Mockoon is the easiest and quickest way to design and run mock APIs. No remote deployment, no account required, free and open-source.