Reviewed by the Softwares.com Editorial Team · Last updated June 2026 · How we rate
Key facts
- Vendor
- Oven
- Pricing
- Open source — Free
- Free tier
- Yes
- Platforms
- Mac, Linux, Windows
- Best for
- Developers
- Editor rating
- 4.7 / 5
- Founded
- 2021
- Headquarters
- San Francisco, CA, USA
What is Bun?
Bun is a development it tool from Oven. Bun is a fast JavaScript runtime, bundler, test runner, and package manager in one.
Bun uses open source pricing and offers a free tier you can start on without a credit card. Free.
It's best suited to developers and runs on Mac, Linux, Windows.
Standout strengths include very fast, all-in-one toolchain, node-compatible. Worth weighing: younger ecosystem.
Bun pricing
Pros
- Very fast
- All-in-one toolchain
- Node-compatible
Cons
- Younger ecosystem
Bun vs alternatives
Ready to try Bun?
Start free and see if it fits your workflow.
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Frequently asked questions
What is Bun?
Bun is a fast JavaScript runtime, bundler, test runner, and package manager in one.
How much does Bun cost?
Bun is open-source-priced. It has a free tier.
Does Bun have a free trial?
Bun offers a free tier rather than a time-limited trial.
What platforms does Bun support?
Bun is available on Mac, Linux, Windows.