OpenAPI Generator CLI is a command-line interface for generating API client SDKs, server stubs, and documentation from OpenAPI specifications. It helps developers automate the process of creating client libraries and backend implementations for APIs.
CLIG - Command Line Interface Generator Clig is a code generator for several programming languages that allows you easy creation of command line parsers. Including a GUI and Command Line tool.
Kirk is essentially a command line tool for locally generating clean HTML code with the help of kirk markup - "kirkup". One could also say that it's a content management system. We'll see once it starts to take form.