Frontend Frameworks

bun

All-in-one toolkit for JavaScript and TypeScript apps.

Status
Generally available
Last checked
Checked · Oct 15, 2026
License
Open source
Pricing
Free tier · from $0

What it is

Bun is a high-performance runtime and package manager that aims to simplify the development of modern web applications by providing a faster alternative to Node.js, npm, and Deno. It supports both JavaScript and TypeScript out-of-the-box.

Bun stands out by offering a faster, more integrated development environment for JavaScript and TypeScript applications compared to traditional runtimes like Node.js.

When it fits — and when it doesn’t

A good fit for

  • Teams looking for a faster alternative to Node.js and Deno for their JavaScript/TypeScript apps

  • Projects that require an integrated package manager with high performance

  • Developers who want to simplify the build process while maintaining modern web standards

Look elsewhere if

  • Projects requiring cloud-based services or managed backend solutions

  • Teams needing a fully-fledged platform with extensive built-in features beyond runtime and package management

Known weaknesses

Each one links to the public issue, changelog or docs page it came from, where we have one.

  1. 01

    Limited community and ecosystem support

    Bun is relatively new, leading to fewer third-party packages and community resources compared to Node.js.

  2. 02

    Potential for breaking changes in rapid development cycles

    As an actively developed project, Bun has undergone several major updates which have included significant API changes.

  3. 03

    Less mature documentation and tooling

    The official documentation is still growing, and there are fewer tutorials and guides available compared to more established runtimes like Node.js.

What it does well

  • Faster performance compared to Node.js and Deno

  • Integrated package manager

  • Support for both JavaScript and TypeScript

  • Built-in support for modern web standards

  • Simplified build process

Pricing

Free tier
YesOpen source — free to use
Paid from
$0
Model
Flat rate
Enterprise plan
No

Pricing not independently confirmed — check the vendor’s page.

Performance benchmarks

How Fast Is It?

Set up bun

Setup steps, common gotchas and what to check after 30 days.

Open the setup guide →