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Elysia

Bun-native web framework with end-to-end type safety. Built for speed.

Lv.3 BuilderFreeBackend

In plain English

Like Hono (the restaurant kitchen) but built specifically for one type of oven that's really fast. If you're already using that oven (Bun), Elysia is the kitchen designed to get the most out of it.

Real-world example

You're building a real-time chat app and need the backend to be extremely fast. Elysia handles thousands of messages per second because it's built on Bun, which is faster than the traditional Node.js runtime.

Where this fits in your project

Same role as Hono or Express — your API layer — but optimized for Bun and type safety.

Idea & Planning
Prototyping
Frontend / UI
Backend / API
Database & Storage
Authentication
Deploy & Hosting
Polish & DX
Scale & Optimize

When to use this

When you want the fastest possible developer experience for building APIs. Bun-native, end-to-end type safe, and the syntax is beautiful.

The situation

You're using Bun (not Node) and want a framework that feels like it was designed for it.

Good for

  • + Bun projects
  • + Type-safe APIs
  • + Real-time apps

Not ideal for

  • - Node.js projects (use Hono instead)
  • - When you need Cloudflare Workers compatibility

Getting started

Run `bun create elysia app` to scaffold a new project.

Alternatives

Hono (runs everywhere)Express (classic)Fastify (Node, fast)