Framework Comparison
LightningAddon vs Plasmo
LightningAddon is a production-ready browser extension framework that ships with authentication, Stripe billing, and 7-browser support from a single TypeScript codebase. Plasmo is an open-source browser extension development framework focused on Chrome with a React-based component model. Here is how they compare.
Feature Comparison
| Feature | LightningAddon | Plasmo |
|---|---|---|
| Browser support | Chrome, Firefox, Safari, Brave, Edge, Opera, Zen | Chrome, Firefox, Edge (Safari community-only) |
| Built-in auth | Firebase + Supabase adapters included | None (build your own) |
| Stripe billing | Integrated (subscriptions, one-time, webhooks) | None (build your own) |
| Typed messaging | End-to-end typed message bus between all contexts | Basic messaging relay |
| Shadow DOM isolation | Built-in for content scripts | CSUI with Shadow DOM |
| Storage migrations | Versioned migration system included | Basic storage API wrapper |
| Monorepo | Turborepo with extension + API + marketing site | Single-package (monorepo via community templates) |
| UI framework | Framework-agnostic (React examples included) | React required |
| Manifest version | MV3 (with MV2 fallback where needed) | MV3 |
| Pricing | $149 one-time, lifetime updates | Free core, paid cloud services (Itero, BPP) |
| License | Commercial (you own the code) | MIT |
Key Differences
Production features out of the box
Plasmo gives you a solid extension build system and dev tools. LightningAddon gives you that plus the SaaS infrastructure: auth flows with Firebase or Supabase, Stripe billing with webhook handling, and a typed messaging layer that works across popup, background, content script, and side panel contexts. With Plasmo, you build these yourself or integrate third-party libraries.
7-browser support vs Chrome-first
LightningAddon targets Chrome, Firefox, Safari, Brave, Edge, Opera, and Zen from a single codebase with browser-specific build configuration handled at the framework level. Plasmo officially supports Chrome, Firefox, and Edge. Safari support exists through community contributions but is not officially maintained.
Architecture approach
Plasmo uses a file-based routing model inspired by Next.js: place files in specific directories and Plasmo generates the manifest and build configuration. LightningAddon uses a Turborepo monorepo with explicit configuration, giving you direct control over the manifest, build pipeline, and project structure. This makes LightningAddon better suited for complex extensions with multiple contexts and backend services.
Pricing model
Plasmo's core framework is MIT-licensed and free. Their paid offerings include Itero (testing platform) and BPP (browser publishing platform) as subscription services. LightningAddon is a $149 one-time purchase. You get the full source code, own it, and receive lifetime updates. No subscriptions, no cloud lock-in.
For a deeper technical comparison, read our detailed blog post: LightningAddon vs Plasmo: Full Technical Comparison.
Frequently Asked Questions
Yes. LightningAddon uses standard browser extension APIs under the hood. Your existing extension logic (content scripts, background scripts, popup UI) ports over directly. The main migration work is adopting LightningAddon's typed messaging layer and monorepo structure, which typically takes 1-2 days for a medium-sized extension.
No. While LightningAddon ships with React examples for popup and options pages, you can use any UI framework or vanilla TypeScript. The core framework is framework-agnostic. Plasmo is built around React and requires it for its component model.
Plasmo's open-source core is free, but their managed cloud services (Itero for testing, BPP for publishing) are paid subscriptions. LightningAddon is $149 one-time with lifetime updates. You own the code, host it yourself, and never pay again.
LightningAddon includes tested Safari Web Extension support with build-time configuration for Safari's specific requirements (like declarativeNetRequest differences and permission handling). Plasmo has community-contributed Safari support but it is not an officially supported target.
Ready to Build?
Get the full LightningAddon framework for $149. One-time payment, lifetime updates, 7-browser support.