Apiary is an online platform for creating, managing, and sharing API specifications. It provides developers with a powerful toolset for designing, documenting, and testing APIs. With Apiary, developers can easily create API specifications, share and collaborate with other developers, and test APIs for errors. It also offers a variety of features, such as automated documentation generation, interactive API simulations, and API analytics. Apiary is designed to help developers quickly and easily create and maintain APIs, allowing them to focus on the development process, rather than the documentation.
Discontinued website / service not available.
Discontinued Appears to be dead. The URL does not work, the last update on Twitter was in 2015.
Discontinued "Doctant has been closed. Last updated: June 12, 2016" - See http://www.doctant.com/closed