Softwr

Content Creation · head to head

Logseq vs Preact

Logseq logo

Logseq

Content Creation

Free open-source note-taking with linked thoughts

From
Free
Rated
-
Full reviewWebsite
Preact logo

Preact

Web Development

3kB alternative to React with the same modern API

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Logseq aGPL-3.0 licensing requires derivative works to be open-source; Preact compatibility through preact/compat is good but not total, and some React libraries break in ways that are hard to diagnose
  • They diverge on capability: Logseq covers Markdown-based notes, Preact covers 3kB runtime.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Logseq and Preact actually diverge.

Attributes where Logseq and Preact differ
AttributeLogseqPreact
Pricing modelopen-sourceOpen source, no licence fee
PlatformsmacOS, Linux, Windows, iOS, Android, WebWeb
CategoryContent CreationWeb Development
Founded2020Unknown

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Logseq

  • Markdown-based notes
  • Bidirectional linking
  • Graph visualization
  • Backlinks
  • Tags
  • Daily notes
  • Journaling
  • Search and filtering

Only in Preact

  • 3kB runtime
  • preact/compat
  • Same modern API
  • Fast rendering

What people use each for

The jobs each tool is most often brought in to do.

Logseq

  • Privacy-first knowledge management with local data storagenot Preact
  • Open-source alternative to proprietary note-taking platformsnot Preact
  • Markdown and Org-mode file support with PDF annotationnot Preact
  • Extensible through plugin ecosystem for custom workflowsnot Preact

Preact

  • Embedded widgets that load inside someone else’s page and must stay smallnot Logseq
  • Marketing and content sites where JavaScript payload affects Core Web Vitalsnot Logseq
  • Applications targeting low-bandwidth or low-powered devicesnot Logseq

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Logseq

  • AGPL-3.0 licensing requires derivative works to be open-source
  • Mobile apps (iOS and Android) still in alpha/beta development stage
  • Self-hosted with local-first architecture, no built-in cloud sync option
  • No native synchronisation between desktop and mobile versions without setup

Preact

  • Compatibility through preact/compat is good but not total, and some React libraries break in ways that are hard to diagnose
  • Behavioural differences from React exist in edge cases, particularly around event handling
  • A much smaller community, so unusual problems have fewer existing answers than React

Pricing, plan by plan

Logseq

Free

No published plan breakdown. See the Logseq review.

Preact

Free
  • PreactFree
    • Full library
    • Commercial use permitted
    • No usage limits

Which should you pick?

Choose Logseq if

  • You need markdown-based notes.
  • You want to start without paying.
  • You work on macOS, Linux, Windows, iOS, Android, Web.
  • You also want bidirectional linking.
Logseq review

Choose Preact if

  • You need 3kb runtime.
  • You want to start without paying.
  • You also want preact/compat.
Preact review

Questions people ask

Is Logseq or Preact better?
Neither clearly leads. Logseq starts at Free and Preact at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Logseq or Preact?
Logseq starts at Free and Preact at Free.
Does Logseq or Preact run on more platforms?
Logseq runs on macOS, Linux, Windows, iOS, Android, Web. Preact runs on Web.
Can I use Logseq for free?
Both have a free tier, so you can try either at no cost before committing.
What is Logseq best used for?
Logseq is most often used for privacy-first knowledge management with local data storage, open-source alternative to proprietary note-taking platforms, markdown and org-mode file support with pdf annotation, extensible through plugin ecosystem for custom workflows. Of those, privacy-first knowledge management with local data storage and open-source alternative to proprietary note-taking platforms are not what Preact is typically brought in for.
What can Logseq do that Preact cannot?
Logseq covers Markdown-based notes, Bidirectional linking, Graph visualization, Backlinks. Preact covers 3kB runtime, preact/compat, Same modern API, Fast rendering.

Answered from the vendors’ own pages

Logseq: How much does Logseq cost?

Logseq is a free, open-source privacy-first knowledge base with no paid tiers or hidden costs. The software is available to download and use at no charge.

Source
Preact: Is Preact free?

Yes, open source under the MIT licence.

Preact: Can I use React libraries with Preact?

Most, through the preact/compat layer. Compatibility is good but not complete, so libraries relying on React internals can break.

Preact: Why choose Preact over React?

Bundle size, almost always. If payload is not a binding constraint, React’s ecosystem is usually the better trade.

Share

Related pages

More on Logseq

More on Preact

Keep looking

Other head to heads