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Plasmo alternatives

2 Chrome Extension kits compared with Plasmo on price, license, framework and features.

About Plasmo

Plasmo (React, freemium) - React-first browser extension framework with built-in messaging, storage, and CSUI helpers. Best for: React/TypeScript teams that want a batteries-included, opinionated framework with built-in messaging and storage APIs, plus optional hosted testing/publishing add-ons.

The usual reason to look elsewhere: your extension's UI is built in Vue or Svelte as the primary framework, or you'd rather build on Vite than a Parcel-based toolchain.

KitFrameworkPriceStarsBest for
PlasmoReactFreemium13,169React/TypeScript teams that want a batteries-included, opinionated framework with built-in messaging and storage APIs, plus optional hosted testing/publishing add-ons.
Extension.jsReactFree5,203Developers who want a single codebase that targets Chrome, Firefox, Edge, and (limited) Safari with genuinely zero build configuration, regardless of which UI framework they pick.
WXTViteFree10,683Developers who want Vite's dev experience for extension work and need to target Chrome, Firefox, and Safari from one codebase without hand-writing manifest.json.

Extension.js

React · Free · 5,203 stars

Best for: Developers who want a single codebase that targets Chrome, Firefox, Edge, and (limited) Safari with genuinely zero build configuration, regardless of which UI framework they pick.

Compared with Plasmo

  • Free, where Plasmo is freemium.

You want a framework with a large, established plugin/module ecosystem already built up - Extension.js is newer and smaller than WXT or Plasmo.

WXT

Vite · Free · 10,683 stars

Best for: Developers who want Vite's dev experience for extension work and need to target Chrome, Firefox, and Safari from one codebase without hand-writing manifest.json.

Compared with Plasmo

  • Free, where Plasmo is freemium.
  • Built on Vite rather than React.

You're locked into Plasmo's React-first APIs already, or you need a hosted build/publish service rather than a self-managed CLI framework.

Still deciding? Read the full Plasmo review, browse every Chrome Extension boilerplate, or see how to choose a boilerplate.