Penify.dev

Penify is an automated documentation generation tool that hooks into your GitHub repositories. It scans your code and pull requests to create and update comprehensive documentation — API docs, internal guides, and more — without you lifting a finger. Instead of writing docs separately, you let Penify handle it as part of your development workflow.

How it works: you install the Penify GitHub app (it's free for the entire repo). As you push code and create pull requests, Penify analyzes the changes, understands the code structure, and generates or updates relevant documentation. It aims to keep docs in sync with your codebase, so you never have outdated READMEs or missing API references. The promise is simple: set it up once, and your docs stay current automatically.

This is especially useful for teams that struggle with documentation debt — startups moving fast, open-source projects with many contributors, or enterprises needing consistent docs across large codebases. Developers save hours each week, and new team members get reliable onboarding material. If you've ever merged a PR only to realize the docs are now wrong, Penify is worth a look.