@huoshan007: Folks, the crazy thing about this is: You can build your own AI second brain without buying a $1000 course or joining a coding bootcamp. Just three and a half steps. Throw your Obsidian, Markdown, PDFs, old documents all into one folder. Install Khoj, an open-source project, 3...

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ai-second-brain open-source obsidian markdown local-llm personal-ai knowledge-management

Summary

Khoj is an open-source personal AI second brain tool that supports connecting to local or cloud large models, indexing personal documents such as Obsidian, Markdown, PDFs, etc., and helps users discover knowledge connections through semantic search, all without needing a programming background.

Folks, the crazy thing about this is: You can build your own AI second brain without buying a $1000 course or enrolling in a programming bootcamp. Just three and a half steps. Throw your Obsidian, Markdown, PDFs, old documents all into one folder. Install Khoj, an open-source project with 35k stars: http://github.com/khoj-ai/khoj. pip install khoj, or just download the desktop version. Then point it to that folder, the Obsidian plugin can auto-sync, and open localhost:42110. Choose any model you want. Claude, GPT, or local llama, qwen, mistral — for privacy, run everything locally. Then it can read all your notes, PDFs you bookmarked but never opened, and those ideas that seemed awesome at the time but you completely forgot. It also uses semantic search to pull out connections you didn't even realize existed. Many people treat AI like a search box. But this thing is more like a research partner who has read all your material. Damn, the real value isn't what the AI can answer, but that it finally knows what's been inside your head.
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Cached at: 07/09/26, 11:43 AM

Guys, the crazy thing about this tool is: you can build your own AI second brain, and you don’t need to buy any $1000 course or sign up for a coding bootcamp. It’s just three and a half steps. Throw all your Obsidian notes, Markdown files, PDFs, old documents into one folder. Install Khoj, an open-source project with 35k stars: http://github.com/khoj-ai/khoj. pip install khoj, or just download the desktop version. Then point it to that folder, and the Obsidian plugin will sync automatically. Open localhost:42110. Choose any model you want: Claude, GPT, or local ones like llama, qwen, mistral. If you want privacy, use local models entirely. Then it can read all the notes you’ve written, the PDFs you saved but never opened again, and those ideas that seemed awesome at the time but you completely forgot about. It also uses semantic search to pull up connections you didn’t even realize existed. Many people use AI as a search box. But this is more like a research partner that has read everything you’ve ever created. Damn, the real value isn’t what AI can answer, but that it finally knows what you’ve had in your head.

khoj-ai/khoj

Source: https://github.com/khoj-ai/khoj

test (https://github.com/khoj-ai/khoj/actions/workflows/test.yml) docker (https://github.com/khoj-ai/khoj/pkgs/container/khoj) pypi (https://pypi.org/project/khoj/) discord (https://discord.gg/BDgyabRM6e)

Your AI second brain

📑 Docs (https://docs.khoj.dev) • 🌐 Web (https://khoj.dev) • 🔥 App (https://app.khoj.dev) • 💬 Discord (https://discord.gg/BDgyabRM6e) • ✍🏽 Blog (https://blog.khoj.dev)

🎁 New

  • Meet 🌶️ Pipali (https://pipali.ai) - our open-source (https://github.com/khoj-ai/pipali) AI coworker that runs on your computer.
  • Read (https://blog.khoj.dev/posts/evaluate-khoj-quality/) about Khoj’s excellent performance on modern retrieval and reasoning benchmarks.

Overview

Khoj (https://khoj.dev) is a personal AI app to extend your capabilities. It smoothly scales up from an on-device personal AI to a cloud-scale enterprise AI.

  • Chat with any local or online LLM (e.g llama3, qwen, gemma, mistral, gpt, claude, gemini, deepseek).
  • Get answers from the internet and your docs (including image, pdf, markdown, org-mode, word, notion files).
  • Access it from your Browser, Obsidian, Emacs, Desktop, Phone or Whatsapp.
  • Create agents with custom knowledge, persona, chat model and tools to take on any role.
  • Automate away repetitive research. Get personal newsletters and smart notifications delivered to your inbox.
  • Find relevant docs quickly and easily using our advanced semantic search.
  • Generate images, talk out loud, play your messages.
  • Khoj is open-source, self-hostable. Always.
  • Run it privately on your computer (https://docs.khoj.dev/get-started/setup) or try it on our cloud app (https://app.khoj.dev).

See it in action

demo_chat

Go to https://app.khoj.dev to see Khoj live.

Full feature list

You can see the full feature list here (https://docs.khoj.dev/category/features).

Self-Host

To get started with self-hosting Khoj, read the docs (https://docs.khoj.dev/get-started/setup).

Enterprise

Khoj is available as a cloud service, on-premises, or as a hybrid solution. To learn more about Khoj Enterprise, visit our website (https://khoj.dev/teams).

Frequently Asked Questions (FAQ)

Q: Can I use Khoj without self-hosting? Yes! You can use Khoj right away at https://app.khoj.dev — no setup required.

Q: What kinds of documents can Khoj read? Khoj supports a wide variety: PDFs, Markdown, Notion, Word docs, org-mode files, and more.

Q: How can I make my own agent? Check out this blog post (https://blog.khoj.dev/posts/create-agents-on-khoj/) for a step-by-step guide to custom agents.

For more questions, head over to our Discord (https://discord.gg/BDgyabRM6e)!

Contributors

Cheers to our awesome contributors! 🎉

Made with contrib.rocks (https://contrib.rocks).

Interested in Contributing?

Khoj is open source. It is sustained by the community and we’d love for you to join it! Whether you’re a coder, designer, writer, or enthusiast, there’s a place for you.

Why Contribute?

  • Make an Impact: Help build, test and improve a tool used by thousands to boost productivity.
  • Learn & Grow: Work on cutting-edge AI, LLMs, and semantic search technologies.

You can help us build new features, improve the project documentation, report issues and fix bugs. If you’re a developer, please see our Contributing Guidelines (https://docs.khoj.dev/contributing/development) and check out good first issues (https://github.com/khoj-ai/khoj/contribute) to work on.

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