When RepreZen joined the OpenAPI Initiative last year, I waxed poetic in a guest post about OpenAPI as a REST API description language:
A lot of API providers have been waiting to upgrade from OpenAPI 2.0 to 3.0 as their go-to API description language. Most have been looking for two things: (1) signs of broader adoption; and (2) more robust tool support.
APIs are the neural connections of the digital economy, allowing systems to connect, collaborate, and converse with meaningful data. But these connections don't start with fully working APIs; they start with API design.
RepreZen API Studio started with the goal of enabling deep interoperability, by unifying data representations across APIs. The core of the product was the API modeling language that became RAPID-ML. API Studio provides the tooling: the RAPID-ML editor, live documentation and diagram views, sandbox testing and code gen framework.