Table of Contents
Key takeaways
- Obsidian is strongest for local-first notes, markdown files, and personal knowledge bases that should remain portable.
- The official download page is the safest route because community plug-ins and sync choices can change the setup experience.
- Check the official help site and changelog before choosing Obsidian for a team or long-term research workflow.
What I verified for this review
Checked against official source pages on April 25, 2026.
- Official Obsidian download page for desktop and mobile platform links.
- Official Obsidian help site for vault, sync, and plug-in guidance.
- Official Obsidian changelog for current product update context.
Official download URL: https://obsidian.md/download
Official resources
Use the official Obsidian download page first, then review the help docs if you plan to use Sync, Publish, or community plug-ins.
| Developer | Dynalist Inc. |
| License | Free (proprietary, personal use) |
| Platform | Windows, macOS, Linux, iOS, Android |
| Official Site | obsidian.md |
Most note-taking apps store your thoughts on someone else’s server, buried behind a subscription paywall, formatted in a proprietary system you cannot export cleanly. Obsidian takes a radically different approach. Obsidian is a free, local-first note-taking and personal knowledge base application that stores every note as a plain Markdown file on your own device. No mandatory account, no cloud lock-in, and no subscription required for the core app. With its powerful linking system, graph visualization, and a thriving plugin ecosystem, Obsidian has become the go-to tool for researchers, writers, developers, and anyone building a long-term knowledge base.
What Is Obsidian?
Obsidian is a free note-taking and knowledge management application developed by Dynalist Inc. The current release is Obsidian 1.12.7 (updated March 23, 2026). At its core, Obsidian is a Markdown editor — but it is built around the concept of linked thinking. Every note can link to any other note using a simple [[double bracket]] syntax, and Obsidian visualizes these connections as an interactive graph. Over time, your notes evolve from isolated documents into a rich, interconnected personal knowledge base — what practitioners call a “second brain.” The free tier includes all local features indefinitely. Optional paid add-ons (Sync and Publish) are available separately but are never required to use the core application.
Key Features
- Local-first storage — all notes are plain .md files you own and can open in any text editor
- Bi-directional linking with [[wikilinks]] and automatic backlink tracking
- Interactive graph view showing the relationships between all your notes
- Canvas feature for visual brainstorming — drag notes onto a freeform spatial canvas
- Tags, folders, and nested vault organization
- Over 1,000 community plugins available (Dataview, Templater, Calendar, Tasks, etc.)
- Community themes for complete visual customization
- Works fully offline — no internet connection required
- Available on Windows, macOS, Linux, iOS, and Android
- No account required for the free tier — download and start immediately
How to Download and Set Up Obsidian
- Go to the official website at obsidian.md and click the download button for your platform. Obsidian detects your OS automatically and offers the right installer. No account or email is required.
- Run the installer. On Windows, this is Obsidian-1.12.7.exe. On macOS, open the .dmg and drag to Applications. Linux users can use the AppImage, .deb, Snap, or Flatpak package.
- Launch Obsidian. You will be prompted to create a new vault. A vault is simply a folder on your computer where your Markdown notes will be stored. Choose any folder — your Documents folder or a dedicated “Notes” directory works well.
- Create your first note by pressing Ctrl+N (Cmd+N on Mac). Type a title in the tab bar and start writing in Markdown. Use ## for headings, **bold**, *italic*, and [[Note Name]] to link to other notes.
- Explore the Graph View (Ctrl+G) after creating a few linked notes. You will see your knowledge base visualized as a network of connected nodes.
- Install community plugins by going to Settings → Community plugins → Browse. Popular starter plugins include Templater (note templates), Dataview (query your notes like a database), and Calendar (daily note navigation).
- Optional: Enable Obsidian Sync ($4/month, billed annually) if you want official end-to-end encrypted sync across devices. Alternatively, use Syncthing (free) or place your vault in a cloud folder for free cross-device access.
System requirements: Windows 10/11, macOS 10.15+, or any modern Linux distribution. iOS 16+ and Android 8+. Requires approximately 200 MB disk space for the application; vault size depends on your note volume.
Obsidian vs Alternatives
Obsidian vs Notion: Notion is a cloud-based workspace with databases, kanban boards, and team collaboration features. It is more powerful for structured project management and sharing, but stores everything on Notion’s servers. Obsidian keeps your notes local in plain text — a critical advantage for privacy and long-term data ownership.
Obsidian vs Roam Research: Roam Research pioneered the linked note-taking model that Obsidian adopts. Roam costs $15/month and stores data in the cloud. Obsidian delivers the same bidirectional linking and graph visualization for free with local storage — a compelling trade-off for most personal users.
Obsidian vs Logseq: Logseq is a free, open-source outliner-first note app with a similar local Markdown philosophy. It uses a block-based (bullet point) structure rather than free-form documents. Users who prefer an outlining workflow may prefer Logseq; those who think in prose or long-form documents generally prefer Obsidian’s free-form editor.
Obsidian vs Evernote: Evernote was the category leader for years but has moved to a restrictive free tier (1 notebook, 50 notes) and stores data on its servers in a proprietary format. Obsidian’s free tier is unlimited, and your data remains forever readable as plain text files — even if Obsidian stops existing as a company.
Pros and Cons
✅ Pros
- Local-first storage — your notes are plain text files you fully own
- Powerful plugin ecosystem with 1,000+ community extensions
- Completely free for personal use on all major platforms
❌ Cons
- Not open source — core application is proprietary
- Sync across devices requires paid Obsidian Sync or a third-party solution
- Steeper learning curve compared to simpler note apps
Common Questions
Is Obsidian really free?
Yes. The core Obsidian application — including all local features, community plugins, and themes — is completely free for personal use on all platforms. Paid add-ons (Obsidian Sync at $4/month and Obsidian Publish at $8/month) are optional. A one-time Catalyst license ($25+) supports development and includes early insider builds but is not required.
Is Obsidian open source?
No. Obsidian’s core application is proprietary (source-available in a limited sense but not open source). However, your notes are stored as plain Markdown files, which are an open format readable by hundreds of applications. Your data is never locked into a proprietary format, even if Obsidian itself is not open source.
Can I sync Obsidian for free across devices?
Yes. The simplest method is to place your vault folder inside Dropbox, OneDrive, Google Drive, or iCloud. Obsidian will open the same vault from any device where the cloud folder is synced. For a more privacy-respecting option, Syncthing offers free peer-to-peer sync between your own devices without any cloud intermediary.
What are the best plugins for beginners?
Start with these four community plugins: Templater for reusable note templates; Dataview for querying your notes like a database (show all tasks due this week, etc.); Calendar for navigating daily notes on a visual calendar; and Obsidian Git for automatic version-controlled backups of your entire vault to GitHub.
If you are comparing local-first vs cloud note-taking, read our Notion vs Obsidian comparison before deciding.
Conclusion
Obsidian is the most capable free personal knowledge base available today. By storing your notes as plain Markdown files that you own outright, it respects your data for the long term in a way no cloud-based competitor can match. Its plugin ecosystem, graph visualization, and Canvas feature make it equally useful for a student capturing lecture notes and a professional building a years-long research library. If you are ready to build a second brain, Obsidian is the place to start. Browse more free productivity software picks at hubkub.com/category/reviews/.
For AI-powered tools that pair well with Obsidian — especially for research and writing workflows — see our Perplexity AI vs ChatGPT comparison and our guide to using Claude AI for writing.
See also: Best Free Software Downloads: The Complete Collection for 2026 — browse all Downloads articles on Hubkub.
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Last Updated: April 13, 2026
