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Preact vs Warp

Preact logo

Preact

Web Development

3kB alternative to React with the same modern API

From
Free
Free plan
Yes
Full reviewWebsite
Warp logo

Warp

Developer Tools

The terminal reimagined with AI and modern features

From
Free
Free plan
Yes
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; Warp limited cloud agents access on free tier
  • Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which Preact and Warp actually diverge.

Attributes where Preact and Warp differ
AttributePreactWarp
Pricing modelOpen source, no licence feeUnknown
PlatformsWebmacOS, Windows, Linux
CategoryWeb DevelopmentDeveloper Tools
FoundedUnknown2020

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 Preact

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

Only in Warp

Nothing recorded that Preact does not also cover.

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 Warp
  • Marketing and content sites where JavaScript payload affects Core Web Vitalsnot Warp
  • Applications targeting low-bandwidth or low-powered devicesnot Warp

Warp

  • Modern terminal environment for developersnot Preact
  • AI-assisted command execution with multiple LLM providersnot Preact
  • Multi-agent orchestration and codebase indexingnot Preact
  • Agentic development workflowsnot 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

Warp

  • Limited cloud agents access on free tier
  • Limited collaboration features on free tier
  • Limited cloud conversation storage on free tier
  • IME input not properly handled on macOS (discarded during command or Agent output)
  • Terminal zoom functionality does not properly resize grid in TUI applications, causing misaligned rendering
  • Multi-language (i18n) support missing as of documentation
  • Requires macOS 10.14 or later (excludes older Mac hardware)
  • Requires Windows 10 build 1903 or later (excludes pre-build 1903 systems)
  • Linux requires glibc 2.31 or higher and GPU support (OpenGL ES 3.0+ or Vulkan) for rendering

Pricing, plan by plan

Preact

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

Warp

Free

No published plan breakdown. See the Warp review.

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 Warp if

  • You want to start without paying.
  • You work on macOS, Windows, Linux.
Warp review

Questions people ask

Is Preact or Warp better?
Neither clearly leads. Preact starts at Free and Warp at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Preact or Warp?
Preact starts at Free and Warp at Free.
Does Preact or Warp run on more platforms?
Preact runs on Web. Warp runs on macOS, Windows, Linux.
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 Warp is typically brought in for.
What can Preact do that Warp cannot?
Preact covers 3kB runtime, preact/compat, Same modern API, Fast rendering.

Answered from the vendors’ own pages

Preact: Is Preact free?

Yes, open source under the MIT licence.

Warp: What is the pricing model?

Usage-based, priced per agent run. Qualifying orgs get $10k of factory usage during closed early access.

Source
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.

Warp: Where does our data live?

Data lives wherever you choose - Warp's cloud, or fully self-hosted inside your own VPC, under your existing retention and compliance rules.

Source
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.

Warp: What is included in the free trial?

Get up to $10,000 in free factory usage during early access.

Source
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