Atomic

Atomic is a personal knowledge base for people who want to find connections across their notes and saved reading. It organizes Markdown notes, web clips, and articles into a knowledge graph you can search and explore.

• Automatic organization: Notes get tags and links based on meaning, while a spatial canvas places related ideas near each other.
• Search and chat: Find notes without matching their exact wording, or ask questions in a chat that searches your knowledge base and cites source notes.
• Cited wikis and reports: Generate wiki articles from notes grouped under a tag, or schedule recurring briefings, contradiction scans, and reports on open questions.
• Web capture: Save pages through the Chrome extension or subscribe to RSS feeds to bring articles into your knowledge base; the extension queues captures offline until your server is available.
• AI tool access: Connect Claude, Cursor, and other MCP clients so they can search, read, and edit your notes.

Atomic is free, open source software under the MIT license. Desktop apps run on macOS, Windows, and Linux. You can keep the stack on a laptop or self-host a Docker server that serves desktop, browser, and native iOS clients.

AI features require Ollama, OpenRouter, or an OpenAI-compatible provider. Ollama supports local AI processing; choosing an external provider sends content used for AI tasks to that service. Atomic Cloud hosts the server and includes AI, with note export available for moving to a self-hosted instance.