Bun — Free & Open Source for Startups

Deal Highlights

Bun — The All-in-One JavaScript Toolkit That Replaces Node, npm, and Webpack

Bun is an ultra-fast JavaScript runtime, bundler, test runner, and package manager — all in one binary. It drops into existing Node.js projects and makes them faster. npm install runs 25x faster. Tests run 4x faster. Server startup is near-instant. Bun is what Node.js would be if it were built from scratch in 2024.

Speed That Changes Workflows

npm install on a typical project: 30 seconds. bun install on the same project: 1.2 seconds. This is not a benchmark trick — it is the actual experience. CI pipelines that took 5 minutes now take 90 seconds. Development servers start in milliseconds instead of seconds.

Drop-In Node.js Replacement

Bun runs most Node.js code without changes. Express, Fastify, Next.js, and most npm packages work out of the box. Switch your runtime from Node to Bun and your existing code runs faster without rewrites.

Built-In Tools

Package manager (replaces npm/yarn/pnpm). Bundler (replaces webpack/esbuild). Test runner (replaces Jest/Vitest). TypeScript and JSX support without configuration. .env file loading. SQLite built in.

Bun vs Node.js

Node.js has the largest ecosystem and broadest compatibility. Bun is dramatically faster but newer with occasional compatibility gaps. For new projects, Bun is compelling. For existing production apps, test compatibility before switching.

Getting Started

1. Install Bun: curl -fsSL https://bun.sh/install | bash
2. Replace npm with bun in your existing project
3. Run bun install — watch dependencies install in seconds
4. Use bun run, bun test, and bun build

Pricing

Bun is free and open-source. No paid plans.

Who Is This Deal For?

Frequently Asked Questions

Everything you need to know about this startup deal.