Obsidian, Notion, and Roam Research are three of the most discussed note-taking tools among developers, researchers, and knowledge workers — and they represent genuinely different philosophies about how knowledge management should work.

Choosing between them isn’t just a feature comparison exercise. It’s a question of what you believe about data ownership, how you think in writing, and whether you want a tool that adapts to your system or a system that comes with its own methodology baked in.

This guide gives you an honest take on each, with a focus on how they handle Markdown — the format that unites and divides them.

Table of Contents

Quick Overview

  Obsidian Notion Roam Research
Data format Local Markdown files Proprietary (cloud) Proprietary (cloud)
Pricing Free + optional paid sync Free tier; $8–16/mo team $15/mo (no free tier)
Offline Yes (fully local) Limited No
Collaboration Via paid Sync only Excellent Limited
Markdown fidelity Native Import only No true Markdown
Bidirectional links Yes Limited Core feature
Plugin ecosystem Very large Moderate Small
Learning curve Medium–High Low–Medium High
Best for Power users, researchers Teams, project management Researchers, Zettelkasten

Obsidian

Obsidian stores your notes as plain .md files in a local folder (called a “vault”). There’s no proprietary format, no cloud lock-in: your notes are files you can open in any text editor, sync with any cloud service, or commit to git.

Markdown in Obsidian

Obsidian renders standard Markdown plus its own extensions:

  • Wiki-links: [[Note Name]] links to another note in your vault
  • Embeds: ![[Note Name]] embeds another note inline
  • Callouts: using > [!note] syntax (similar to GitHub alerts)
  • Tags: #tag in text or YAML frontmatter
  • Dataview queries: if you install the Dataview plugin, you can query your notes like a database

The Markdown files are genuinely portable. You can open them in VS Code, iA Writer, Typora, or any other editor without losing formatting.

For a detailed walkthrough of Obsidian’s Markdown features, see our Markdown in Obsidian workflow guide.

What Obsidian does well

  • Graph view: visualize connections between notes as a network graph
  • Plugin ecosystem: 1,000+ community plugins covering everything from Kanban boards to spaced repetition
  • Themes: hundreds of community themes, fully customizable via CSS
  • Templater: powerful templating plugin for structured notes
  • Dataview: query your notes like a database using frontmatter fields
  • Local-first: your data never leaves your machine unless you choose Obsidian Sync or a third-party sync tool

Where Obsidian struggles

  • Real-time collaboration: Obsidian Sync ($8/mo) supports sync but not simultaneous editing. For true co-authoring, it falls short.
  • Mobile experience: the iOS and Android apps work but feel less polished than the desktop
  • Setup time: getting the right combination of plugins, themes, and workflows takes investment
  • Tables: Obsidian’s table editor has improved but still isn’t as smooth as a spreadsheet. Use our Markdown Table Formatter to clean up tables before pasting in.
  • No web publishing without Obsidian Publish ($20/mo): if you want to share notes publicly, there’s a cost

Who Obsidian is for

Obsidian suits people who:

  • Want full ownership and control of their data
  • Are comfortable setting up their own system
  • Work primarily alone or asynchronously
  • Write a lot of technical content (code blocks, frontmatter, Markdown tables)
  • Value portability — moving vaults between tools, syncing with git, exporting for other uses

Notion

Notion is a “connected workspace” — part wiki, part database, part project manager. It’s cloud-first, with real-time collaboration at its core, and it’s extremely good at combining structured data (databases, boards, calendars) with freeform prose.

Markdown in Notion

Notion is not a Markdown editor in any meaningful sense. It accepts Markdown shortcuts for formatting (type ## for a heading, ** for bold), and it can import Markdown files — but the internal format is entirely proprietary.

Exporting notes from Notion gives you Markdown files, but:

  • Database views become plain text tables
  • Callout blocks, toggles, and some block types don’t translate cleanly
  • The export quality is good enough for archiving but not for round-tripping between tools

What Notion does well

  • Databases: the killer feature. Filter, sort, group, and view the same data as a table, Kanban board, calendar, or gallery.
  • Collaboration: real-time multiplayer editing, comments, @mentions, page sharing — it’s genuinely excellent
  • Templates: a huge library of community templates for everything from project trackers to personal OKRs
  • AI integration: Notion AI can draft content, summarize pages, and answer questions about your workspace
  • Ease of use: the lowest learning curve of the three tools. Non-technical users get comfortable quickly.
  • Web clipper: browser extension for saving web pages directly to Notion

Where Notion struggles

  • Data ownership: your data lives on Notion’s servers in a proprietary format. If Notion disappears or changes pricing, extraction is possible but messy.
  • Offline access: desktop apps cache content for offline reading, but editing offline is unreliable
  • Performance: large workspaces can feel sluggish, especially on older machines
  • Search: full-text search is present but weaker than Obsidian for large note collections
  • No bidirectional links: Notion has backlinks, but they’re less central and less powerful than in Roam or Obsidian
  • Markdown roundtrip: copying content out of Notion and into another Markdown tool often requires cleanup. Our HTML to Markdown converter can help if you’re exporting Notion pages as HTML.

Who Notion is for

Notion suits people who:

  • Work on teams and need real-time collaboration
  • Want a tool that combines project management and note-taking in one place
  • Prefer structured databases over free-form linking
  • Don’t mind cloud-only storage
  • Are less concerned with Markdown portability

Roam Research

Roam Research pioneered the daily-notes + bidirectional-links approach that many tools have since copied. It’s built around a single fundamental insight: notes are not files in a hierarchy, they’re nodes in a graph.

Every piece of text in Roam can be referenced from anywhere else. That block of text you wrote in March about dependency injection? Reference it in your October notes with ((block-uid)). Roam tracks all uses automatically.

Markdown in Roam

Roam uses a subset of Markdown for inline formatting (bold, italic, code) but it is not a Markdown-first tool. The storage format is a proprietary graph database, not files. Exports are available in Markdown and JSON, but the bidirectional block references don’t survive the export cleanly.

What Roam does well

  • Block-level bidirectional links: the most powerful implementation of backlinking available. Every block has a unique ID and can be referenced anywhere.
  • Daily notes: Roam’s default workflow centers on a daily note, making it easy to capture and later resurface ideas
  • Queries: filter blocks by tags, page references, and dates
  • Spaced repetition: built-in {{roam/sr}} flashcard system
  • Zettelkasten: Roam is the closest thing to a digital Zettelkasten that exists as a finished product

Where Roam struggles

  • Price: $15/month with no free tier. That’s the steepest of the three.
  • Design and polish: Roam’s interface hasn’t evolved significantly since launch. It’s functional but feels dated compared to Obsidian and Notion.
  • Cloud-only: no offline access, no local files
  • Limited integrations: the ecosystem is small compared to Obsidian or Notion
  • Steep learning curve: the block-based, graph-first model takes time to internalize
  • Stagnation: Roam’s development pace has slowed. Several competitors (Logseq, Obsidian) have closed the gap on its unique features while adding more.

Who Roam is for

Roam suits people who:

  • Think in non-linear, associative ways and want their tool to reflect that
  • Are committed to the Zettelkasten or networked thought methodology
  • Do academic research or heavy reading with annotations
  • Don’t mind a steep learning curve or paying $15/month
  • Write primarily for personal use (not collaboration)

Feature Comparison Table

Feature Obsidian Notion Roam Research
Storage Local files Cloud (proprietary) Cloud (proprietary)
True Markdown files Yes No No
Offline access Full Read-only cache No
Bidirectional links Yes Partial Yes (block-level)
Real-time collab No (Sync only) Yes Limited
Plugin ecosystem Very large (1,000+) Moderate Small
Mobile apps Yes Yes Yes
Web clipper Community plugin Official extension Limited
AI features Via plugins Built-in (Notion AI) No
Free tier Yes Yes No
Starting price (paid) $8/mo (Sync) $8/mo (Plus) $15/mo
Data export Markdown files Markdown + CSV Markdown + JSON
Graph view Yes No Yes
Tables/databases Markdown tables Full databases Basic
Publishing $20/mo (Publish) Free (Share) No

Which Tool Should You Choose?

There’s no universal answer, but here’s a practical decision framework:

Choose Obsidian if:

  • Data ownership and portability are non-negotiable for you
  • You write a lot of technical content (code, Markdown tables, frontmatter)
  • You’re a solo user or work asynchronously with a small team
  • You enjoy customizing your environment and don’t mind setup overhead
  • You want your notes to be usable in other Markdown tools (VS Code, Jekyll, Docusaurus)

Choose Notion if:

  • You work on a team and need real-time collaboration
  • You want to replace multiple tools (project tracker + wiki + docs) with one workspace
  • You need structured databases (not just freeform notes)
  • Your team includes non-technical users who need a low learning curve
  • You’re comfortable with cloud-only storage

Choose Roam Research if:

  • You’re a researcher, academic, or heavy reader who does a lot of annotation and cross-referencing
  • You’re committed to the Zettelkasten or networked thought methodology
  • You’re willing to pay $15/month and invest time in the learning curve
  • The block-level bidirectional linking model genuinely resonates with how you think

Don’t choose Roam if you’re primarily motivated by its unique features but haven’t tried the free alternatives that have closed the gap: Logseq in particular.

What About Logseq?

Logseq deserves a mention because it occupies an interesting position: it offers Roam-style bidirectional block linking, but stores data as local Markdown files (like Obsidian). It’s free and open source.

If you like Roam’s linked block approach but want local files and a free price tag, Logseq is the most compelling alternative. It’s less polished than Obsidian, and the plugin ecosystem is smaller, but it’s grown substantially since 2022.

The main tradeoff: Logseq’s outline-first interface (everything is a bullet point) feels natural to some users and constraining to others.

Markdown Portability: The Practical Reality

From a pure Markdown portability standpoint, the ranking is clear:

  1. Obsidian — native Markdown, fully portable, round-trips perfectly
  2. Notion — imports and exports Markdown, but the internal format is proprietary; some loss in translation
  3. Roam — Markdown only at the edges (export/import); not a Markdown-first tool

If your notes need to end up in a static site generator (Jekyll, Docusaurus, Hugo), a GitHub wiki, or any other Markdown-consuming tool, Obsidian gives you the cleanest path. See our MkDocs vs Docusaurus vs GitBook guide if you’re also thinking about documentation tooling.

Whatever tool you use, our free Markdown Live Editor is useful for testing how your notes will render before publishing them elsewhere.