Mapstraction : A javascript library to hide differences between mapping APIs.
WireMock : Free and Open Source tool for building mock APIs. Create stable development environments, isolate yourself from flakey 3rd parties and simulate APIs t...
Alpaca : Given a web API, Generate client libraries in node, php, python, ruby
Cliquet : Cliquet is a toolkit to ease the implementation of HTTP microservices, such as data-driven REST APIs.
Eve : Eve is an open source Python REST API framework designed for human beings. It allows to effortlessly build and deploy highly customizable, fully featu...
Bluepine is a DSL for defining API Schema/Endpoint with the capabilities to generate Open API (v3) spec, validate API request and serialize object for API response based on single schema definition.