Overview
Obsidian is a powerful knowledge management and note‑taking environment that turns your thoughts into a connected, searchable knowledge base. Built on local Markdown files, it gives you full ownership and portability of your data while layering on rich, graph-based navigation and AI-assisted workflows. Organize ideas with links, tags, and backreferences, then explore the relationships visually through an interactive knowledge graph. With community plugins, themes, and custom hotkeys, Obsidian adapts to your thinking style, whether you are a researcher, developer, writer, or knowledge worker. AI integrations can help summarize long notes, generate outlines, and surface related content, so you spend less time searching and more time thinking. Because everything is stored locally first, Obsidian works offline and can be synced securely across devices using optional sync services. Whether you’re building a personal “second brain,” maintaining project documentation, or managing a lifelong learning archive, Obsidian provides a flexible, extensible workspace that grows with your ideas and keeps your knowledge safe, structured, and ready to use.
Pricing
Freemium
Detailed plans have not been confirmed in our catalog. Check the official website for current limits and billing terms.
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Use Cases
- Build a personal second brain that connects notes, ideas, and resources across projects, books, and courses.
- Manage research projects with linked literature notes, concepts, and summaries for faster writing and analysis.
- Create technical documentation and wikis for teams, backed by versionable Markdown files and graph navigation.
- Plan and track complex projects by linking tasks, meeting notes, decisions, and reference materials.
- Support long-term learning with topic-based note networks, spaced review, and AI-generated summaries.
Features
Local-first Markdown knowledge base
Bi-directional linking & backlinks
Interactive knowledge graph view
AI-assisted summarization and recall
Powerful community plugins ecosystem
Customizable themes and layouts
Cross-device sync and backups
Offline-first, privacy-focused design
Reviews
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FAQ
Is Obsidian free to use?
Obsidian offers a free version for personal use with core note-taking and knowledge management features. Some advanced services, such as commercial licenses, sync, and publishing, may require paid plans. Check the official website for the latest pricing details.
Where are my Obsidian notes stored?
Your notes are stored as plain-text Markdown files on your local device in folders you control. You can choose whether to use any sync service and can back up or move your vaults like regular files, ensuring full data ownership.
Does Obsidian work offline and across devices?
Yes. Obsidian is an offline-first app, so you can access and edit your notes without an internet connection. To use Obsidian on multiple devices, you can enable Obsidian Sync or rely on third-party sync solutions like cloud storage, depending on your workflow and security needs.
Can I use AI features with Obsidian?
Obsidian itself focuses on local knowledge management, but you can extend it with community plugins and integrations that add AI features such as summarization, content generation, smart search, and note recommendations. Availability and pricing of AI features depend on the specific plugin or service.
Can I migrate my notes from other apps to Obsidian?
Yes. Because Obsidian uses standard Markdown files, you can usually export notes from other tools (such as Evernote, Notion, or OneNote) and convert them to Markdown. Many community plugins and external converters exist to help streamline the migration process.