# PendragonX > AI-powered second brain that thinks with you. ## Overview PendragonX is an AI knowledge management platform that automatically connects ideas in a living 3D knowledge graph, lets users chat with their own notes using private AI, and provides visual studios (Canvas, Whiteboard, Mind Maps) for spatial thinking. It is a smarter alternative to Notion, Obsidian, OneNote, Roam Research, and Evernote. ## URL https://pendragonx.com ## Core Features - Living 3D Knowledge Graph: Automatically links related ideas without manual tagging or folders - Private AI Assistant: Chat with your entire knowledge base; answers are grounded only in your own notes - AI Agents: Build autonomous agents that monitor your knowledge and surface insights - Canvas Studio: Infinite canvases for spatial arrangement of ideas - Whiteboard: Collaborative brainstorming surfaces - Mind Map Studio: Visual concept mapping - Zettelkasten System: Atomic, interconnected note cards following the slip-box method - Seamless Import: Drag-and-drop from Obsidian vaults, Notion exports, Roam Research, Evernote, and Markdown with duplicate detection - Real-time Collaboration: Work together with co-authors and teams - Chrome Extension: Clip and save web content directly - 22+ Built-in Plugins: Calculator, citation generator, Pomodoro timer, and more - End-to-End Encryption: Zero-knowledge encryption for sensitive content - Offline Mode: Progressive Web App (PWA) with full offline support - Bullet Journal: Digital rapid logging with future/monthly logs and habit tracking ## Pricing - Free: $0/forever — Up to 50 Zettelcards, unlimited notebooks, full note-taking, 22+ plugins - Premium: $4.99/month — Unlimited cards, advanced 3D graph, AI agents, collaboration, priority support ## Comparisons ### PendragonX vs Notion Notion excels at linear databases and templates but requires manual organization. PendragonX automatically builds a living 3D knowledge graph and includes a private AI assistant — no manual linking required. ### PendragonX vs Obsidian Obsidian offers local Markdown files and a 2D graph view with plugins. PendragonX provides a 3D interactive graph, built-in private AI chat and agents, native Canvas/Whiteboard/Mind Map studios, and real-time collaboration without plugin configuration. ### PendragonX vs OneNote OneNote is purely linear with weak search. PendragonX automatically links ideas, visualizes knowledge in 3D, and includes AI-powered search, agents, and spatial thinking tools. ### PendragonX vs Roam Research Roam pioneered bi-directional linking but is expensive and text-only. PendragonX adds 3D spatial visualization, AI agents, visual studios, offline mode, and encryption at a lower price. ## Company Built by Mills Tech Industry. ## Documentation - Full features: https://pendragonx.com/llms-full.txt - Changelog: https://pendragonx.com/changelog - Privacy Policy: https://pendragonx.com/privacy - Terms of Service: https://pendragonx.com/terms