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.
- 01
Limited community and ecosystem support
Bun is relatively new, leading to fewer third-party packages and community resources compared to Node.js.
- 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.
- 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.