- crawl4ai by unclecode, 87k stars. Apache-2.0 web crawler that outputs markdown for LLM pipelines
- MinerU by opendatalab, 84k stars. Converts PDFs and Office files into markdown or JSON for LLM pipelines
- AFFiNE by toeverything, 75k stars. Open-source workspace for docs, whiteboards and planning with CRDT sync
- docling by docling-project, 71k stars. Converts PDFs and office files into structured text and tables for LLM pipelines
- memos by usememos, 64k stars. Self-hosted note-taking app organized as a personal timeline
- slidev by slidevjs, 49k stars. Markdown based presentation slides built with Vue and Vite
- siyuan by siyuan-note, 47k stars. Local-first markdown note app with AI agent access and self-hosted sync
- logseq by logseq, 46k stars. Local-first outliner for notes and knowledge graphs in Markdown or Org-mode
- outline by outline, 41k stars. Team knowledge base with real-time collaborative editing and markdown support
- marker by datalab-to, 41k stars. Converts PDFs to markdown and JSON with layout-aware extraction
- Scrapegraph-ai by ScrapeGraphAI, 33k stars. Python library that uses an LLM to extract data from web pages
- opendataloader-pdf by opendataloader-project, 30k stars. Java PDF parser that outputs JSON, markdown and HTML with accessibility tagging
- glow by charmbracelet, 28k stars. Terminal markdown reader that renders files with styling
- anydoc by firecrawl, 24k stars. Converts Office, PDF, EPUB and CSV files to Markdown, with Node and Python APIs
- tolaria by refactoringhq, 21k stars. Desktop app for managing markdown-based knowledge bases
- pdf-inspector by firecrawl, 20k stars. Rust PDF classifier that detects scanned versus text PDFs and extracts text
- claude-obsidian by AgriciDaniel, 16k stars. Claude Code setup that files sources into a linked Markdown vault for Obsidian
- EverOS by EverMind-AI, 14k stars. Local-first memory layer shared across AI agents, stored as Markdown
- milkdown by Milkdown, 12k stars. Plugin-based WYSIWYG markdown editor framework built on ProseMirror
- obsidian-second-brain by eugeniughelbur, 5.3k stars. Persistent memory for coding agents, stored as markdown in Obsidian
- open-knowledge by inkeep, 4.8k stars. Markdown editor and knowledge base with AI features and agent skills
- files.md by zakirullin, 4.2k stars. Minimal desktop app for writing and browsing markdown files
- QLMarkdown by sbarex, 3.8k stars. Quick Look plugin that previews Markdown files on macOS
- PaperTodo by snownico0722, 2.8k stars. Minimal Windows sticky notes with to-dos and Markdown
- leaf by RivoLink, 2.4k stars. Terminal Markdown previewer with a GUI-like reading experience
- MD-This-Page by Ademking, 1.7k stars. Browser extension that converts a web page to clean Markdown
- human-review by petergyang, 1.5k stars. Edit HTML and Markdown visually and send comments back to an AI agent
- paperthin by LilMGenius, 1.4k stars. Clean-code rules packaged as agent skills to curb sloppy generated output
- Daily_You by Demizo, 1.4k stars. Flutter journal app for private diary entries and mood tracking
- gander by mokshablr, 1.4k stars. Offline Android file viewer for documents, media, archives and code
- oc by only-cli, 695 stars. Wraps a website as a compact CLI so agents can browse with few tokens
- Paperling by Razee4315, 599 stars. Minimal distraction-free markdown editor built with Tauri and React
- official-design-md by VoltAgent, 532 stars. Official DESIGN.md design system files published by companies
- mdv by drasimwagan, 516 stars. Markdown extension with embedded charts, HTML and PDF export, and live preview
- mado by akiomik, 419 stars. Fast linter for Markdown files written in Rust
- core by asdecided, 301 stars. CLI engine that records engineering decisions and serves them via MCP
- marky by GRVYDEV, 281 stars. Lightweight viewer for opening and reading markdown files
- health-md by CodyBontecou, 236 stars. Apple Health data exported as markdown notes, for Obsidian and similar
- presentation-design-prompts by SlideSpeak, 211 stars. Markdown guide of slide design rules to paste into any AI chatbot
- pagecast by Amal-David, 192 stars. CLI and agent skill that publishes HTML and Markdown to Cloudflare Pages
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