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Bun

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Added on:17 Sept 2026Last updated:17 Sept 2026Category:Developer ToolsPlatforms:desktop Advertise this tool Update this tool

What is Bun?

Bun is a fast JavaScript runtime, package manager, test runner, and bundler all-in-one. It aims to replace Node.js, npm, webpack, and Jest with a single tool optimized for performance and developer experience.

Core features

  • Fast JavaScript runtime
  • Package manager
  • Test runner
  • Bundler
  • Node.js compatibility
  • TypeScript support

What it does well

  • Significantly faster than Node.js
  • All-in-one toolchain
  • Native TypeScript support
  • Good npm compatibility
  • Active development

Where it falls short

  • Still maturing
  • Some Node.js API gaps
  • Windows support improving
  • Smaller ecosystem

Best suited for

  • JavaScript developers
  • Node.js users
  • Frontend builders
  • Performance-focused teams

Use cases

  • Running JavaScript applications faster
  • Managing project dependencies
  • Bundling frontend code
  • Running tests

Frequently asked questions

What is Bun?▾

Bun is a fast JavaScript runtime, package manager, test runner, and bundler all-in-one, designed as a faster alternative to Node.js.

Is Bun compatible with Node.js?▾

Bun aims for Node.js compatibility and can run most Node.js applications, though some edge cases may differ.

How fast is Bun compared to Node.js?▾

Bun claims to be 3-4x faster than Node.js for many operations, though actual performance varies by use case.

Privacy notes

JavaScript runtime. Open source. No telemetry by default.