Backend · Runtime

Bun

A JavaScript runtime and toolkit focused on speed and integration.

License
MIT
Cost
Open Source
Self-host
Yes

Overview

Bun packages a runtime, package manager, test runner, and bundler around a Node-compatible JavaScript environment.

Why it is interesting

Why pay attention

It is a meaningful option for teams testing whether a faster integrated toolchain can simplify local and server workflows.

Editorial status

Worth watching as the project develops.

Best for

  • JavaScript and TypeScript teams evaluating an integrated toolchain

Not ideal for

  • Production systems requiring complete Node compatibility guarantees

Open source & pricing

Open Source

Bun is free and open source; infrastructure costs depend on where it runs.

GitHub momentum

★ 95,974

Last 7 days
+52
Last 30 days
Window incomplete
Evidence
9/10/2026–9/17/2026 · weekly window

Official links

websitedocumentationrepository

Sources checked

Official documentation, repository, license, and product factsmaintainer · Sep 4, 2026