Suggestions appear as you type. Use the up and down arrows to choose one and Enter to open it.

This page's audience real numbers from our own analytics — open to see them
–Visitors
–Page views
–Clicks to vendors
–Time on page
–Reading now
Clicks to vendors, by tool
  • –
Top countries
  • –
Devices
  • –

– · counted by iTechGuides's own first-party analytics, bots removed, every figure rounded down · how we count

Head-to-head · Personal Knowledge Management Software

Obsidian vs TheBrain

  • Updated Sep 2026
  • Both researched from official sources
  • 5 checks side by side
Higher score Obsidian #1 in Personal Knowledge Management Software 9.2/10 Free plan · paid from $4/user/mo (annual) Free plan✓ 1 of 4 features Visit Obsidian
TheBrain #6 in Personal Knowledge Management Software 7.3/10 Free plan · paid from $15/mo Free plan✓ 4 of 4 features Visit TheBrain

Obsidian leads on 0 checks, TheBrain on 3, and 2 are even. Who comes out ahead on the 5 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreObsidian · 9.2/10
  • Free planboth
  • Most featuresTheBrain · 4 of 4

Obsidian scores higher on our rubric for personal knowledge management software: 9.2 against 7.3 out of 10; our editors rank them #1 and #6.

TheBrain offers backlinks; Obsidian doesn't publish it. TheBrain offers graph view; Obsidian doesn't publish it. TheBrain offers import and export; Obsidian doesn't publish it.

Obsidian is the better fit for flexible personal knowledge bases. TheBrain is the better fit for long-established visual knowledge graphs.

  • Obsidian fits best

    Flexible personal knowledge bases

  • TheBrain fits best

    Long-established visual knowledge graphs

Advertiser disclosure: iTechGuides is reader-supported. We may earn a commission when you click some links. How we rank.

Side by side

Feature Obsidian 9.2/10 Visit ↗ TheBrain 7.3/10 Visit ↗
At a glance
Editor score 9.2 7.3
Ranking #1 in Personal Knowledge Management Software #6 in Personal Knowledge Management Software
Best for Flexible personal knowledge bases Long-established visual knowledge graphs
Pricing model Free plan + paid Free plan + paid
Starting price $4/user/mo Not published
Free plan ✓ ✓
Free trial — —
Deployment Cloud, Desktop, Mobile, Browser extension Cloud, Self-hosted, Desktop, Mobile
Platforms Windows, macOS, Linux, iOS, Android, Chrome extension Web, Windows, macOS, Linux, iOS, Android
Support Email, Community, Docs Email, Live chat, Phone, Community, Docs
Integrations 13 integrations 3 integrations
Built for Solo, Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features Obsidian 1/4 · TheBrain 4/4
Backlinks Not published ✓ (best)
Graph view Not published ✓ (best)
Offline access ✓ ✓
Import and export Not published ✓ (best)
Specs
Organization model Not published Graph
Supported platforms Windows, macOS, Linux, iOS, Android, Chrome extension Windows, macOS, Linux, iOS, Android, web
Our review
Pros
  • Linked notes, backlinks, graph view, and Canvas support structured thinking
  • Local Markdown vaults and offline access support account-free core use
  • Windows, macOS, Linux, iOS, Android, and Chrome extension coverage
  • Visual network with backlinks, mapped links, and unlinked mentions
  • Free plan includes unlimited thoughts, links, brains, and local notes
  • Runs across web, desktop, mobile, and Linux platforms
Cons
  • Sync and web publishing require separate paid add-ons
  • The wide plugin and customization ecosystem can add decision overhead
  • Commercial licensing does not add app functionality
  • Paid plans are required for unlimited private sync
  • No integrations are included
  • Collaboration and shared brains require TeamBrain
Our verdict

Obsidian is a note-taking and knowledge-management application built around locally stored Markdown files. It is designed for people who want flexible personal knowledge bases rather than a rigid document hierarchy. Linked notes,…

Read the review →

TheBrain is a personal knowledge management application built around a visual network of connected thoughts, concepts, notes, files, and web links. It suits researchers, writers, students, and knowledge workers who prefer graph-based…

Read the review →
  1. ObsidianPersonal Knowledge Management Software 9.2Free plan · paid from $4/user/mo (annual)
  2. TheBrainPersonal Knowledge Management Software 7.3Free plan · paid from $15/mo

Strengths and trade-offs

  • Obsidian — where it wins

    • Linked notes, backlinks, graph view, and Canvas support structured thinking
    • Local Markdown vaults and offline access support account-free core use
    • Windows, macOS, Linux, iOS, Android, and Chrome extension coverage

    Where it doesn't

    • Sync and web publishing require separate paid add-ons
    • The wide plugin and customization ecosystem can add decision overhead
    • Commercial licensing does not add app functionality

  • TheBrain — where it wins

    • Visual network with backlinks, mapped links, and unlinked mentions
    • Free plan includes unlimited thoughts, links, brains, and local notes
    • Runs across web, desktop, mobile, and Linux platforms

    Where it doesn't

    • Paid plans are required for unlimited private sync
    • No integrations are included
    • Collaboration and shared brains require TeamBrain
  • Obsidian9.2/10 · Free plan · paid from $4/user/mo (annual)

    A flexible local Markdown vault with powerful linking, plugins, and optional paid sync.

    Visit ObsidianFull verdict →
  • TheBrain7.3/10 · Free plan · paid from $15/mo

    A mature visual knowledge graph with broad platform support and optional paid sync.

    Visit TheBrainFull verdict →

More comparisons

All personal knowledge management software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026

Last updated · How we research and update