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Bun
Site icon for “Bun”

Bun

Frontend Frameworks

Blazing-fast all-in-one JS runtime
https://bun.sh
https://bun.sh

Core features and highlights

Bun is an extremely fast all-in-one JavaScript/TypeScript runtime that integrates a runtime, bundler, package manager, and tester. Built on Zig, it includes native support for fetch, WebSocket, and SQLite, and offers progressive compatibility with common Node APIs.

Use cases and target users

Well-suited for building high-performance backend services, edge deployments, APIs, full-stack applications, and developer tooling scripts. Aimed at frontend and backend engineers, startups, and developers who prioritize fast builds and a simplified toolchain.

Key advantages and highlights

  • Much faster dependency installs and cold starts: bun install and runtime responsiveness outperform traditional tools
  • Single binary, integrated toolchain that reduces configuration and context switching
  • Built-in TypeScript/JS transpilation, bundling, and test runner for a unified developer experience
  • Low latency and low memory usage, suitable for CI/CD and edge deployments