Blume
Blume is an open source, Markdown-first documentation framework for shipping production-grade docs sites with minimal setup. A folder of Markdown is a complete project: navigation is inferred from files, while search, theming, and OG images work out of the box, with configuration available only when needed. It includes 30+ accessible, theme-aware components and Markdown extensions for callouts, cards, steps, tabs, file trees, package-install tabs, code groups, Mermaid diagrams, and KaTeX math, with no imports or JSX to manage. Blume can render interactive OpenAPI and AsyncAPI references with endpoints, schemas, and a live “Try it” playground, and it includes a built-in changelog sourced from Markdown or GitHub Releases. Content can come from local Markdown, remote repositories, CMSs, Notion, or custom backends and be mixed into one site. It is built for both humans and AI: every page can be fetched as raw Markdown, indexed through llms.txt, and queried with an in-page AI assistant.
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Hugo
The world’s fastest framework for building websites. Hugo is one of the most popular open-source static site generators. With its amazing speed and flexibility, Hugo makes building websites fun again. Hugo is the fastest tool of its kind. At <1 ms per page, the average site builds in less than a second. Hugo supports unlimited content types, taxonomies, menus, dynamic API-driven content, and more, all without plugins. We love the beautiful simplicity of markdown’s syntax, but there are times when we want more flexibility. Hugo shortcodes allow for both beauty and flexibility. Hugo ships with pre-made templates to make quick work of SEO, commenting, analytics and other functions. One line of code, and you're done. Hugo provides full i18n support for multi-language sites with the same straightforward development experience Hugo users love in single-language sites. Hugo allows you to output your content in multiple formats, including JSON or AMP, and makes it easy to create your own.
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MkDocs
MkDocs is a fast, simple and downright gorgeous static site generator that's geared towards building project documentation. Documentation source files are written in Markdown, and configured with a single YAML configuration file. There's a stack of good looking themes available for MkDocs. Choose between the built in themes, mkdocs and readthedocs, select one of the third-party themes listed on the MkDocs Themes wiki page, or build your own. Get your project documentation looking just the way you want it by customizing your theme and/or installing some plugins. Modify Markdown's behavior with Markdown extensions. Many configuration options are available. The built-in dev-server allows you to preview your documentation as you're writing it. It will even auto-reload and refresh your browser whenever you save your changes. MkDocs builds completely static HTML sites that you can host on GitHub pages, Amazon S3, or anywhere else you choose.
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Storybook
Storybook provides a sandbox to build UIs in isolation so you can develop hard-to-reach states and edge cases. Implement components and pages without needing to fuss with data, APIs, or business logic. Render components in key states that are tricky to reproduce in an app. Save use cases as stories in plain JavaScript to revisit during development, testing, and QA. Use addons to customize your workflow, automate testing, and integrate with your favorite tools. Stories are a pragmatic, reproducible way to keep track of UI edge cases. Write stories once then reuse them to power automated tests. Whenever you write a story you get a handy test case. Quickly browse stories to make sure your UI looks right. Pinpoint UI changes down to the pixel by comparing image snapshots of stories. Reuse stories in your unit tests to confirm nuanced functionality. Stories show how UIs actually work not just how they're supposed to work. That makes gathering feedback and reproductions easy.
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