Rspack

Rust-based web bundler that compiles JavaScript, TypeScript, and assets into optimized bundles for browsers. Built as a drop-in replacement for webpack with a compatible API, enabling teams to migrate without rewriting configs or replacing plugins and loaders.

Trusted by enterprises including Microsoft, Amazon, ByteDance, Discord, and Cloudflare. Differentiates from webpack through a parallelized Rust architecture that yields significantly faster dev startup and builds, while staying compatible with most webpack loaders and plugins. Part of the Rstack toolchain alongside Rsbuild, Rspress, and Rsdoctor.

Key capabilities:

• Webpack-compatible plugin and loader ecosystem
• Code splitting, tree shaking, and module federation
• Built-in SWC and Lightning CSS for fast transpilation
• Incremental HMR for rapid feedback during development
• JavaScript API for programmatic builds and customization

Teams use it to speed up large webpack-based apps without rewrites, migrate incrementally from webpack, and benefit from faster CI builds. Fits React, Vue, and other frameworks; works with Rsbuild for zero-config setup or as a standalone bundler.