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Bun

AcquiredYC S19

San Francisco, US · Founded 2019 · 13 employees · 2 known investors

Find your way into Bun

257 people in our graph share verified history with the Bun team — schools, employers, funds. One of them is your warm intro.

Hemant Tanejaunlockedknows Jarred Sumner · together at Stripe (overlapped)
×8knows the team · via Anthropic
×3knows the team · via Stripe

Bun is a JavaScript and TypeScript toolkit that includes a runtime, bundler, test runner, and package manager designed to be compatible with Node.js projects. It can be adopted incrementally as individual tools or as a complete stack.

Also known as Codeblog · Webthing

Founders & leadership· Y Combinator alumni (S19)

Bun was founded in 2019 by Jarred Sumner.

JSJarred Sumner
Jarred Sumnerin𝕏Founder & CEO2021–2025Jarred Sumner is the founder of Bun, a JavaScript and TypeScript toolkit that provides a runtime, bundler, package manager, and test runner compatible with Node.js projects.

Investors · 2

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Frequently asked questions

What does Bun do?
Bun is a JavaScript and TypeScript toolkit that includes a runtime, bundler, test runner, and package manager designed to be compatible with Node.js projects. It can be adopted incrementally as individual tools or as a complete stack.
Who founded Bun?
Bun was founded by Jarred Sumner in 2019.
Who are Bun's investors?
Bun's investors include Kleiner Perkins, Y Combinator.
Where is Bun headquartered?
Bun is headquartered in San Francisco, US.