JSON Server vs OpenAPI Specification: What are the differences?
Developers describe JSON Server as "Get a full fake REST API with zero coding in less than 30 seconds. For front-end developers who need a quick back-end for prototyping and mocking". Created with <3 for front-end developers who need a quick back-end for prototyping and mocking. On the other hand, OpenAPI Specification is detailed as "An API description format for REST APIs". It defines a standard, language-agnostic interface to RESTful APIs which allows both humans and computers to discover and understand the capabilities of the service without access to source code, documentation, or through network traffic inspection.
JSON Server and OpenAPI Specification can be primarily classified as "API" tools.
JSON Server is an open source tool with 41.2K GitHub stars and 3.68K GitHub forks. Here's a link to JSON Server's open source repository on GitHub.