Papa – open-source Hemingway-style readability linting for Markdown

Papa is an open-source tool that analyzes Markdown text for readability, flagging complex sentences, passive voice, and adverbs to enforce a clear, concise style inspired by Ernest Hemingway. It is designed for writers, editors, and developers who want to improve the clarity of their documentation, blog posts, or prose directly in their workflow. The project is interesting because it brings a well-known, opinionated writing philosophy into a programmable, customizable linter that integrates with editors and CI pipelines.