While it is an open spec, the spec maintainer, Swagger, definitely keeps its fingerprint on it for business reasons. Among other issues, their validation tools in particular require a sign-up. Postman also has an Open API 3 schema builder, but also requires a sign up. There is no technical reason for this, and you have to trust Swagger or Postman to be responsible with your API schema. I believe this front-and-center branding of the spec itself makes it not as appealing or dynamic as it otherwise would be
While it is an open spec, the spec maintainer, Swagger, definitely keeps its fingerprint on it for business reasons. Among other issues, their validation tools in particular require a sign-up. Postman also has an Open API 3 schema builder, but also requires a sign up. There is no technical reason for this, and you have to trust Swagger or Postman to be responsible with your API schema. I believe this front-and-center branding of the spec itself makes it not as appealing or dynamic as it otherwise would be
edit ApiBldr seems ok: https://apibldr.com/
edit 2 AsyncAPI seems interesting: https://www.asyncapi.com/