# Bun

A JavaScript runtime, package manager, bundler and test runner in one very fast binary.

HTML: https://softbests.com/software/bun
Markdown: https://softbests.com/software/bun.md
Website: https://bun.sh

- Category: [Developer utilities](https://softbests.com/category/developer-tools)
- Pricing: Open source
- Platforms: macOS, Windows, Linux, CLI

## Best for

JavaScript and TypeScript teams who want shorter installs and startup times without rewriting their stack.

## Why it deserves attention

Bun is a drop-in JavaScript runtime built on JavaScriptCore: it executes TypeScript directly, ships its own package manager that installs node_modules far faster than npm, includes a bundler and a Jest-compatible test runner, and speaks most of Node's standard library and npm ecosystem. Recent releases have focused on Node compatibility, so real services can move over; Trigger.dev reported 41% lower memory per container and 18% faster cold starts after switching. It is MIT-licensed, still shipping frequent releases (v1.4 at the time of writing) after its team joined Anthropic, and installs as a single binary via brew, curl or npm. Caveats: a few Node APIs and native modules still behave differently, and production teams should test their specific dependencies before switching.

## Can replace

- Node.js

## Related and alternatives

- [Homebrew](https://softbests.com/software/homebrew)
- [Docker Desktop](https://softbests.com/software/docker-desktop)