OpenAPI Specification vs Shields.io: What are the differences?

OpenAPI Specification: 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; Shields.io: GitHub badges as a service. Legible & concise status badges for third-party codebase services.

OpenAPI Specification and Shields.io can be categorized as "API" tools.

Shields.io is an open source tool with 8.53K GitHub stars and 2.01K GitHub forks. Here's a link to Shields.io's open source repository on GitHub.

Medidata Solutions, Kapten, and Unmetric are some of the popular companies that use OpenAPI Specification, whereas Shields.io is used by Movielala, InJoin, and Coveralls. OpenAPI Specification has a broader approval, being mentioned in 22 company stacks & 8 developers stacks; compared to Shields.io, which is listed in 7 company stacks and 11 developer stacks.