Reviewed by the NexaToolkit team · Last reviewed June 2026. We compare on cost, data ownership, and writing style — the three things that actually decide PKM fit. NexaToolkit may earn a commission from links on this page — it never changes what we recommend.
Obsidian, Roam, and Logseq are the three tools serious note-takers fight about — and the choice comes down to how you think (document vs outline), how much you’ll pay, and whether you want to own your data locally. Here’s the honest 2026 comparison, with real pricing.
Cost: Obsidian and Logseq are basically free; Roam isn’t
Obsidian‘s app is free (optional Sync $10/mo, Publish $10/mo). Logseq‘s app is free and open-source (optional Sync $5/mo). Roam charges $15/month ($165/year) with no free tier — the priciest by far for arguably less flexibility.
Data ownership: local-first vs cloud
Obsidian and Logseq store notes as plain-text files on your machine — you own them forever, sync via iCloud/Dropbox for free if you want. Roam is cloud-only, so your knowledge base lives on their servers. For long-term ownership, local-first wins.
Writing style: document vs outline
Obsidian suits document-style, long-form notes with a huge plugin ecosystem (2,000+ plugins, 2M+ users). Logseq and Roam are outliner-first — bullet-point daily journaling with block references. Pick by how your brain organizes: prose (Obsidian) or bullets (Logseq/Roam).
Obsidian vs Roam vs Logseq
| Obsidian | Logseq | Roam | |
|---|---|---|---|
| App cost | Free (Sync $10) | Free OSS (Sync $5) | $15/mo |
| Data | Local plain-text | Local plain-text | Cloud-only |
| Style | Document/long-form | Outliner/journaling | Outliner/block-refs |
| Plugins | 2,000+ (largest) | 200+ | Limited |
| Best for | Prose + plugins | Free outliner | Block-ref devotees |
A real scenario
Someone building a personal knowledge base: if you write in paragraphs and want the biggest plugin ecosystem, Obsidian (free, sync via Dropbox for $0) is the default. If you think in bullets and want fully open-source, Logseq (free) is the pick. Roam pioneered block references but at $15/month with cloud-only storage, most people now choose a free local-first tool that does the same thing. For nearly everyone, the answer is a free one — Obsidian or Logseq — not Roam’s subscription.
Frequently asked questions
Obsidian, Roam, or Logseq?
Obsidian (free) for document-style notes and the biggest plugin ecosystem; Logseq (free, open-source) for outliner-style journaling; Roam ($15/mo) only if you’re committed to its specific block-reference workflow. Most people pick a free local-first tool.
Are Obsidian and Logseq really free?
Yes — both apps are free, storing plain-text notes locally. Optional paid sync (Obsidian $10/mo, Logseq $5/mo) exists, but you can sync free via iCloud or Dropbox. Roam has no free tier.
Which keeps my data most safely?
Obsidian and Logseq — they store notes as plain-text files you own locally, independent of any company. Roam is cloud-only, so your data lives on their servers.
More: see our Notion AI vs Obsidian AI and no-code database tools.
