ReadMe is described as 'Completely customizable and collaborative place for dynamic API and/or product documentation. Users can play around with the API right in the docs, automatically generated from a Swagger / OAS file. It also works as a knowledge base platform' and is a documentation generator in the development category. There are more than 25 alternatives to ReadMe, not only websites but also apps for a variety of platforms, including Mac, SaaS, Windows and Linux apps. The best ReadMe alternative is Insomnia REST Client, which is both free and Open Source. Other great sites and apps similar to ReadMe are GitBook, Wiki.js, Widget-Board and Archivy.