Swagger is an open-source and professional tool that simplifies API development for teams, users, and enterprises. Learn how Swagger can help your APIs be designed and documented at scale. Swagger tools are powered by the OpenAPI Specification, the industry standard for RESTful API design. Individual tools for creating, updating and sharing OpenAPI definitions with consumers. SwaggerHub is a platform solution that supports OpenAPI workflows on a large scale. Swagger's open source and professional tools have helped millions API developers, teams, organizations, and companies deliver great APIs. Swagger is the easiest and most powerful tool to fully take advantage of the OpenAPI Specification.