xiaoymin/knife4j

Swagger UI is a collection of HTML, JavaScript, and CSS assets that dynamically generate beautiful documentation from a Swagger-compliant API.

swagger-codegen contains a template-driven engine to generate documentation, API clients and server stubs in different languages by parsing your OpenAPI / Swagger definition.

Scalar is an open-source API platform:　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　🌐 Modern REST API Client　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　📖 Beautiful API References　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　✨ 1st-Class OpenAPI/Swagger Support

Bruno is an open-source API client and IDE designed as a lightweight alternative to tools like Postman. Its core differentiator is storing API collections directly on your filesystem using a plain text markup language called Bru, which enables collaboration via Git or any version control system. Bruno operates offline-only, with no plans for cloud synchronization, emphasizing data privacy by keeping all collection data on your device. It is available across Mac, Windows, and Linux via binary downloads and various package managers, and offers a CLI with Docker support for automated testing and CI/CD pipelines. While the majority of its features are free and open source, commercial versions are also available for additional capabilities.