WireMock : Free and Open Source tool for building mock APIs. Create stable development environments, isolate yourself from flakey 3rd parties and simulate APIs t...
API Security Checklist : Checklist of the most important security countermeasures when designing, testing, and releasing your API.
RSS Box : This app uses the API of other websites and gives you an RSS feed in return. Quick and simple.
JSON Schema : JSON Schema is a vocabulary that allows you to annotate and validate JSON documents.
GraphQL : GraphQL is a query language for APIs and a runtime for fulfilling those queries with your existing data. GraphQL provides a complete and understandabl...
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.