WireMock : Free and Open Source tool for building mock APIs. Create stable development environments, isolate yourself from flakey 3rd parties and simulate APIs t...
gRPC : gRPC is a modern, open source remote procedure call (RPC) framework that can run anywhere. It enables client and server applications to communicate tr...
httpbin.org : A simple HTTP Request & Response Service.
npoint.io : JSON storage bins with schema validation
DuckRails : DuckRails is a development tool.
Its main purpose is to allow developers to quickly mock API endpoints that for many possible reasons can't reach at a...
Mockoon is the easiest and quickest way to design and run mock APIs. No remote deployment, no account required, free and open-source.