Alpine.js vs Stimulus
Which should you use? A side-by-side look at what each one does, who it suits, what it costs, how hard it is to set up, and where each falls short.
Open source · MIT
A small JavaScript framework that adds interactive behavior directly inside your HTML.
Open source · MIT
A small JavaScript framework that adds behavior to HTML you already have.
The short answer
Choose Alpine.js if you need…
- Developers adding dropdowns, tabs, or toggles to server-rendered pages
- Teams who want light interactivity without a full single-page app build setup
- Developers who want to include a single script tag and start working
- Contributors who want to improve the core library or plugins
Choose Stimulus if you need…
- Developers who already render HTML on the server and want light interactivity
- Teams pairing a server-rendered app with Turbo, as the README recommends
- Projects that want a small framework instead of a full front-end app framework
Side-by-side
| Alpine.js | Stimulus | |
|---|---|---|
| Type | Library | Library |
| Price | Free and open source | Free and open source |
| Licence | MIT | MIT |
| GitHub stars | 32k | 13.1k |
| Setup difficulty | Beginner | Beginner |
| How you get it | Clone and build from source | Install with a package manager |
| Main language | HTML | TypeScript |
| Last code update | 12 days ago | 8 days ago |
What each one is
Alpine.js
Alpine.js is a lightweight JavaScript framework for adding interactive behavior to web pages by writing small pieces of logic directly in HTML markup. The README in this repository is mainly a contribution guide; the full user documentation lives on alpinejs.dev. It is organized as a monorepo of the core library plus optional plugins such as collapse, focus, intersect, mask, morph, and persist.
Stimulus
Stimulus is a JavaScript framework that adds interactive behavior to existing HTML. You mark elements with data attributes such as controllers, targets, and actions, then write a small controller class that responds to them. It does not render HTML itself, and it works with or without a build step.
Best for
Alpine.js
- Developers adding dropdowns, tabs, or toggles to server-rendered pages
- Teams who want light interactivity without a full single-page app build setup
- Developers who want to include a single script tag and start working
- Contributors who want to improve the core library or plugins
Stimulus
- Developers who already render HTML on the server and want light interactivity
- Teams pairing a server-rendered app with Turbo, as the README recommends
- Projects that want a small framework instead of a full front-end app framework
Strengths
Alpine.js
- Small, focused scope described in the README as a minimal framework
- Can be loaded from a single script tag using the built CDN file
- Modular: optional plugins are separate packages in the repo
Stimulus
- Small scope: it augments HTML rather than replacing your front end
- Works with any asset packaging system, or with a plain script tag and no build step
- Watches the DOM and manages controller lifecycle as elements appear and disappear
Not ideal for
Alpine.js
- Projects that need a full app framework with routing and a build pipeline; the README describes only the core and plugins, so check the docs for those features
- Readers looking for end-user documentation; this README points to alpinejs.dev for most usage details
Stimulus
- Teams building a full single-page app with client-side rendering, since Stimulus is explicitly not concerned with rendering HTML
- Beginners with no HTML or JavaScript basics, since the README assumes you already have both
Trade-offs
Alpine.js
- The README is a contribution guide, so detailed usage must be found in external docs
- The history plugin's name is noted as likely to change
- Documentation for version 2 is kept separately, so readers must pick the right version
Stimulus
- Not a rendering solution, so you need another way to produce HTML
- The README is brief on advanced usage, so details live in the external Handbook and Reference
Getting started
Alpine.js
Clone the repository
git clone https://github.com/alpinejs/alpineInstall dependencies
npm installStimulus
Install dependencies for local development
yarn installFrequently asked questions
What is the difference between Alpine.js and Stimulus?
Alpine.js: A small JavaScript framework that adds interactive behavior directly inside your HTML. Stimulus: A small JavaScript framework that adds behavior to HTML you already have. Alpine.js suits developers adding dropdowns, tabs, or toggles to server-rendered pages, while Stimulus suits developers who already render html on the server and want light interactivity.
Are Alpine.js and Stimulus free?
Alpine.js: Free and open source. Stimulus: Free and open source.
Is Alpine.js or Stimulus more popular?
Alpine.js has more GitHub stars (32k) than Stimulus (13.1k). Popularity isn't the same as fit — check which one matches your use case above.
Built from our catalogue entries for both products: open-source details come from each project's README (AI-assisted, refreshed weekly) and GitHub data; AI-tool details are editorial. Spotted something wrong? Let us know from either product's page.