{"slug": "show-hn-openknowledge-open-source-ai-first-alternative-to-obsidian-notion", "title": "Show HN: OpenKnowledge – open source AI-first alternative to Obsidian/Notion", "summary": "OpenKnowledge, an open-source, AI-first markdown editor and LLM wiki, launched as an alternative to Obsidian and Notion. The tool offers WYSIWYG editing, collaborative AI-editing with Claude and Codex, and team sharing via git/GitHub, available on macOS, Linux, and Windows.", "body_md": "OpenKnowledge is a beautiful, local-first markdown editor and LLM wiki with integrations for Claude, Codex, and other harnesses.\n\nAvailable as [macOS app](https://github.com/inkeep/open-knowledge/releases/latest/download/Open-Knowledge-arm64.dmg) or [Web app/CLI](https://openknowledge.ai/docs/get-started/quickstart#ok-install-web-app-linux-windows-intel-mac) for Linux, Windows, Intel Mac.\n\nKey highlights:\n\n- Full\n**WYSIWYG** so that editing markdown files feels like editing a Google Doc or Notion page. - Collaborative\n**AI-editing** with**Claude, Codex, and Cursor desktop apps**. Can be used with any harness/agent via MCP/CLI. - Out-of-the-box\n**MCP**,** skills**, and** agentic search**for LLM Wikis, agent second brains, and spec-driven development. - No-code\n**Team Sharing** and**Auto-sync** powered by git/GitHub under the hood.\n\nDocs for general usage: [https://openknowledge.ai/docs](https://openknowledge.ai/docs).\n\n**macOS:** download the desktop app — open the DMG, drag **OpenKnowledge** to **Applications**, and launch it. [Latest release](https://github.com/inkeep/open-knowledge/releases/latest).\n\n**Linux, Windows, Intel Mac:** run the same editor as a local web app via the CLI ([Node.js 24+](https://nodejs.org) required):\n\n```\nnpm install -g @inkeep/open-knowledge\ncd your-project\nok init          # scaffold the project + wire up Claude Code, Cursor, and Codex\nok start --open  # serve the web editor and open it in your browser\n```\n\nPublic pull requests are welcome. When a public PR opens here, automation mirrors it into the internal monorepo for review and merge.\n\nSee [CONTRIBUTING.md](/inkeep/open-knowledge/blob/main/CONTRIBUTING.md) for details.\n\nOpenKnowledge is licensed under the [GNU General Public License v3.0 or later](/inkeep/open-knowledge/blob/main/LICENSE) (`GPL-3.0-or-later`\n\n).", "url": "https://wpnews.pro/news/show-hn-openknowledge-open-source-ai-first-alternative-to-obsidian-notion", "canonical_source": "https://github.com/inkeep/open-knowledge", "published_at": "2026-06-25 16:04:46+00:00", "updated_at": "2026-06-26 01:33:25.774283+00:00", "lang": "en", "topics": ["ai-tools", "large-language-models", "developer-tools", "generative-ai"], "entities": ["OpenKnowledge", "Obsidian", "Notion", "Claude", "Codex", "GitHub", "Node.js"], "alternates": {"html": "https://wpnews.pro/news/show-hn-openknowledge-open-source-ai-first-alternative-to-obsidian-notion", "markdown": "https://wpnews.pro/news/show-hn-openknowledge-open-source-ai-first-alternative-to-obsidian-notion.md", "text": "https://wpnews.pro/news/show-hn-openknowledge-open-source-ai-first-alternative-to-obsidian-notion.txt", "jsonld": "https://wpnews.pro/news/show-hn-openknowledge-open-source-ai-first-alternative-to-obsidian-notion.jsonld"}}