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Parcel vs Bun: catalog facts
Parcel	Bun
Best for: Web developers who want a bundler that works without setup	Best for: Replacing Node, npm, a bundler and a test runner with a single faster tool
Free Free to install from the npm registry.	Free Free and open source. The runtime core is MIT licensed with some bundled components under other licences including… Full pricing details for Bun Free and open source. The runtime core is MIT licensed with some bundled components under other licences including GPL-2.0.
Windows, macOS, Linux, Command line	Windows, macOS, Linux, Command line
Works without configuration for common projects Supports many languages and asset types out of the box All 4 strengths for Parcel Works without configuration for common projects Supports many languages and asset types out of the box Installs missing plugins automatically Built-in development server	Runtime, bundler, test runner and package manager in one executable Much faster startup and installs than the Node and npm equivalents All 4 strengths for Bun Runtime, bundler, test runner and package manager in one executable Much faster startup and installs than the Node and npm equivalents Runs TypeScript directly with no build step Designed as a drop-in for Node.js, so existing projects often work unchanged
Requires Node.js and a package manager Less control than heavily configured bundlers for unusual setups	Node compatibility is good but not complete; packages using deep internals can break Younger than Node, so fewer production deployments to learn from All 4 limitations for Bun Node compatibility is good but not complete; packages using deep internals can break Younger than Node, so fewer production deployments to learn from Linux kernel 5.6 or later is strongly recommended, with 5.1 the minimum Older x64 CPUs can hit illegal instruction errors without a baseline build
Downloadable app	Downloadable app
Not open source	Open source
License not stated	License: MIT
No account needed	No account needed
Offline features available	Offline features available
Official website Full listing and sources Sources for Parcel parceljs.org Catalog checked September 24, 2026	Official website Full listing and sources Sources for Bun github.com/oven-sh/bun Catalog checked September 21, 2026

“Not stated” means we have not confirmed it. Features can vary by device and plan.