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Obsidian

Obsidian

A local-first, markdown-based knowledge base with powerful linking.

softwareNote Takingnotesmarkdownknowledge-base
Our Verdict

Best for

Advanced note-takers and researchers

Skip if

Casual mobile note-takers

What is Obsidian?

Obsidian is a note-taking and personal knowledge management app built around plain markdown files stored locally on your device. Rather than a rigid folder hierarchy, Obsidian encourages a networked structure through bidirectional links, backlinks, and an interactive graph view that visualizes how notes connect. Because notes are just markdown files on disk, Obsidian is fast, works fully offline, and keeps your data portable - there is no proprietary lock-in. A large community plugin ecosystem extends the core app with everything from spaced-repetition flashcards to kanban boards and calendar views. Obsidian Sync and Obsidian Publish are optional paid add-ons for cross-device syncing and publishing notes as a website, but the core app is free for personal use.

SpecificationsAI-estimated

platformsMac, Windows, Linux, iOS, Android
deploymentDesktop App
open source❌ No
api available❌ No
support optionsForum, Discord
key integrationsGit, iCloud, Dropbox

Key Features of Obsidian

Notes stored as local markdown files with no lock-in
Bidirectional linking and backlinks between notes
Interactive graph view of your entire knowledge base
1000+ community plugins for extending functionality
Canvas for visual, freeform note arrangement

Use Cases for Obsidian

1

Zettelkasten Note-taking

Build an interconnected web of atomic notes for long-term research and writing.

2

Developer Documentation

Keep local, version-controllable technical notes alongside your codebase.

3

Academic Research

Link readings, citations, and ideas together for thesis or paper writing.

Pros & Cons of Obsidian

Pros

  • Full data ownership with local markdown files
  • Extremely fast and works offline
  • Massive plugin ecosystem
  • One-time payment for sync (no forced subscription)

Cons

  • Steeper learning curve than typical note apps
  • Mobile app less polished than desktop
  • Sync/Publish cost extra

Frequently Asked Questions

Where is my data stored?

Your notes are stored as plain markdown files on your own device, in a folder you choose.

Do I need Obsidian Sync to use it on multiple devices?

No, you can use any file-syncing tool like iCloud, Dropbox, or Git; Obsidian Sync is an optional convenience.

Is Obsidian open source?

The core app is closed source and free to use, though many plugins are open source.

Pricing Overview

View full pricing →
Freemium

Free for personal use; commercial licenses and sync/publish are paid add-ons.

Personal

$0

Catalyst

$25

Commercial

$50

Highly recommend Obsidian

by Verified User5/18/2026

Obsidian has quickly become part of our daily workflow. Extremely fast and works offline. One minor gripe: sync/publish cost extra, but it hasn't been a dealbreaker. Would recommend to anyone considering it.

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About the Tool

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Target AudienceIndividual researchers, writers, and developers

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Tags

notesmarkdownknowledge-baseproductivitylocal-first

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