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Preact vs MUI

Preact logo

Preact

Web Development

3kB alternative to React with the same modern API

From
Free
Rated
-
Full reviewWebsite
MUI logo

MUI

Web Development

React component library implementing Material Design

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Preact compatibility through preact/compat is good but not total, and some React libraries break in ways that are hard to diagnose; MUI escaping the Material Design look takes more theming effort than teams expect
  • They diverge on capability: Preact covers 3kB runtime, MUI covers Large component set.

Where they differ

Only the attributes on which Preact and MUI actually diverge.

Attributes where Preact and MUI differ
AttributePreactMUI
Pricing modelOpen source, no licence feeOpen-source core with paid tiers for advanced components

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

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 Preact

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

Only in MUI

  • Large component set
  • Theming system
  • Accessibility
  • TypeScript support

What people use each for

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

Preact

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

MUI

  • Building an admin or internal application quickly with components that already worknot Preact
  • Teams needing accessible complex widgets without building themnot Preact
  • Products where Material Design is an acceptable or desired starting pointnot Preact

Where each one falls short

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

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

MUI

  • Escaping the Material Design look takes more theming effort than teams expect
  • Bundle size is significant, and careless imports pull in far more than needed
  • Advanced components such as the full data grid require a paid licence
  • Major version upgrades have historically required real migration work

Pricing, plan by plan

Preact

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

MUI

Free
  • CommunityFree
    • Core component library
    • Theming
    • Community support

Which should you pick?

Choose Preact if

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

Choose MUI if

  • You need large component set.
  • You want to start without paying.
  • You also want theming system.
MUI review

Questions people ask

Is Preact or MUI better?
Neither clearly leads. Preact starts at Free and MUI at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Preact or MUI?
Preact starts at Free and MUI at Free.
Does Preact or MUI run on more platforms?
Both run on Web, so platform support will not decide this one for you.
Can I use Preact for free?
Both have a free tier, so you can try either at no cost before committing.
What is Preact best used for?
Preact is most often used for embedded widgets that load inside someone else’s page and must stay small, marketing and content sites where javascript payload affects core web vitals, applications targeting low-bandwidth or low-powered devices. Of those, embedded widgets that load inside someone else’s page and must stay small and marketing and content sites where javascript payload affects core web vitals are not what MUI is typically brought in for.
What can Preact do that MUI cannot?
Preact covers 3kB runtime, preact/compat, Same modern API, Fast rendering. MUI covers Large component set, Theming system, Accessibility, TypeScript support.

Answered from the vendors’ own pages

Preact: Is Preact free?

Yes, open source under the MIT licence.

MUI: Is MUI free?

The core library is open source and free. Advanced components, including the full-featured data grid, require a paid 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.

MUI: Can MUI look non-Material?

Yes, through the theming system, but a substantial departure takes real work. Teams wanting full design control often prefer unstyled primitives instead.

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.

MUI: Does MUI handle accessibility?

Components follow WAI-ARIA patterns by default, which is a large part of why teams adopt it.

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