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Bun

AcquiredYC S19

San Francisco, US · Founded 2019 · 13 employees · 4 known investors

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Bun is an all-in-one JavaScript and TypeScript toolkit for building, installing, running, and testing code. It targets JavaScript and TypeScript developers aiming to speed up their development workflow.

Also known as Codeblog Corp. · Codeblog · Codeblog, Webthing · Webthing

Data & InfrastructureDeveloper ToolsEnterprise SoftwareOpen SourceUnited States of AmericaAmerica / Canada

Founders & leadership· Y Combinator alumni (S19)

Bun was founded in 2019 by Jarred Sumner.

JSJarred Sumner
Jarred SumnerFounder & 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.
AP
Ashcon PartoviProduct
CP
Conner PhillippiHead of Operations
ER
Eugene RobertsonRecruiter

Investors · 4

Y Combinatorlisted by Y CombinatorSan Francisco · $500K

How we know: the Y Combinator directory · open dataset · 5k.vc investor directory · Not right? Tell us

Andreessen HorowitzreportedMenlo Park · $500K – $50M

How we know: Y Combinator's founder network · Not right? Tell us

Khosla VenturesreportedMenlo Park · $100K – $20M

How we know: Y Combinator's founder network · Not right? Tell us

Related companies · 5

HyperDXHyperDX provides distributed tracing and observability software for developers, enabling end-to-end request tracing from browsers and phones to backend servers. The platform uses ClickHouse for fast search across event data and includes features for session replay correlation, log aggregation, and metrics visualization.
QuestDBQuestDB is an open-source time-series database designed for high-performance analytics and low-latency querying of temporal data. It serves financial institutions, trading platforms, and enterprises requiring real-time data processing.
HeliconeHelicone provides infrastructure for AI companies to route, debug, and analyze their applications. The platform serves developers and organizations building AI systems.
TesseralTesseral is an open source platform that provides identity and access management for business software, with features including single sign-on, user provisioning, role-based access control, and audit logging. It serves organizations managing access for employees, customers, services, and AI agents.
refineRefine is an open-source web application framework that helps organizations build web applications faster with fewer resources. The company develops the open-core framework and related ecosystem products.

Companies working in the same space as Bun.

Legal entities · 1

corporate structure
Codeblog Corp.

In the news

Bun.js creator Jarred Sumner talks tech, funding, and startups | InfoWorldinfoworld.com · Jun 2023

Frequently asked questions

What does Bun do?
Bun is an all-in-one JavaScript and TypeScript toolkit for building, installing, running, and testing code. It targets JavaScript and TypeScript developers aiming to speed up their development workflow.
Who founded Bun?
Bun was founded by Jarred Sumner in 2019.
Who are Bun's investors?
Bun's investors include Kleiner Perkins, Y Combinator, Andreessen Horowitz, Khosla Ventures.
Where is Bun headquartered?
Bun is headquartered in San Francisco, US.