Runtime Accelerated Rendering Infrastructure
rari is a high-performance React Server Components framework powered by a Rust runtime. Built for performance, scalability, and developer experience.
With proper app router support, true server-side rendering, and correct RSC semantics, rari delivers 46.5x higher throughput and 9.1x faster response times than Next.js.
- App Router - File-based routing with layouts, loading states, and error boundaries
- True Server-Side Rendering - Pre-rendered HTML with instant hydration
- React Server Components - Server components by default, client components when you need them
- Rust-powered runtime - Persistent runtime for maximum performance
- Zero-config setup - Works out of the box with pre-built binaries
- Hot module reloading - Instant feedback during development
- Universal NPM package support - Use any npm package seamlessly
- TypeScript-first - Full type safety across server/client boundary
- Cross-platform - Supports macOS, Linux, and Windows
- Streaming SSR - Progressive rendering with Suspense boundaries
- Loading States - Automatic loading skeletons during navigation
Create a new rari application in seconds:
npm create rari-app@latest my-app
cd my-app
npm run devThat's it! Your app will be running at http://localhost:5173.
Visit rari.build/docs for complete documentation, guides, and examples.
Read the full documentation to learn more about:
- Getting started with rari
- App Router and file-based routing
- Server Components and Client Components
- Server Actions and data mutations
- Streaming SSR and Suspense
- Deployment and production optimization
- 9.1x faster response times - 0.43ms vs 3.92ms average response
- 46.5x higher throughput - 74,662 req/sec vs 1,605 req/sec under load
- 46.6x faster latency under load - 0.67ms vs 31.17ms average latency
- 53% smaller bundles - 264 KB vs 562 KB client JavaScript
- 3.7x faster builds - 0.93s vs 3.47s production builds
- App Router - File-based routing with automatic code splitting
- Zero configuration - Create projects instantly with
create-rari-app - Hot module reloading - See changes instantly during development
- Full TypeScript support - Complete type safety across server/client boundary
- Correct RSC semantics - Server components by default,
'use client'for interactivity - Cross-platform - Works on macOS, Linux, and Windows
rari delivers exceptional performance that significantly outperforms traditional React frameworks:
Benchmarks last updated: February 5, 2026
Response Time (Single Request):
| Metric | rari | Next.js | Improvement |
|---|---|---|---|
| Average | 0.43ms | 3.92ms | 9.1x faster |
| P95 | 0.67ms | 4.55ms | 6.8x faster |
| Bundle Size | 264 KB | 562 KB | 53% smaller |
Throughput Under Load (50 concurrent connections, 30s):
| Metric | rari | Next.js | Improvement |
|---|---|---|---|
| Requests/sec | 74,662 | 1,605 | 46.5x higher |
| Avg Latency | 0.67ms | 31.17ms | 46.6x faster |
| P95 Latency | 1.15ms | 38.93ms | 33.9x faster |
| Errors | 0 | 0 | Stable |
Build Performance:
| Metric | rari | Next.js | Improvement |
|---|---|---|---|
| Build Time | 0.93s | 3.47s | 3.7x faster |
| Bundle Size | 264 KB | 562 KB | 53% smaller |
All benchmarks are reproducible. See benchmarks/ for methodology and scripts.
We welcome contributions! Here's how you can help:
- Report Bugs - Found an issue? Open a bug report
- Suggest Features - Have ideas? Share your suggestions
- Improve Docs - Help make our documentation better
- Submit PRs - Check out our Contributing Guide
- Discord - Join our community
- GitHub - Star the repo
- Documentation - rari.build/docs
rari is made possible by the support of these companies:
Neon - Serverless Postgres. Autoscaling, branching, and scale to zero.
Interested in sponsoring rari? Get in touch or support us on GitHub Sponsors.
MIT License - see LICENSE for details.