Piral is a production-grade microfrontend framework for building modular single-page applications. It provides a runtime app shell (Piral instance) that dynamically loads independently deployable feature modules called pilets from a feed service. The framework includes a core React-based runtime (piral-core) with state management (Zustand), event system, extension slots, and routing abstraction supporting multiple React Router versions and Wouter. A rich plugin ecosystem extends the pilet API with capabilities like dashboards, menus, modals, notifications, forms, search, authentication (OAuth2, OIDC, ADAL), localization, and more. Framework converters enable pilets to be written in React, Vue 2/3, Angular, Svelte, Solid, Preact, and many other UI frameworks via a foreign component lifecycle (mount/update/unmount). The CLI tooling (piral-cli) provides commands for scaffolding, building, debugging, packing, publishing, and validating both Piral instances and pilets. It supports multiple npm clients (npm, yarn, pnpm, bun, Lerna, Rush) and bundlers (Webpack 5, with plugins for esbuild, Vite, Rspack). A webpack5 bundler plugin (piral-cli-webpack5) includes HMR, custom style/sheet loaders, and Module Federation integration. The CLI also includes an emulator for local development and a kras-based debug injector for live reload. Architecturally, the monorepo is organized into framework (piral-base, piral-core, piral, siteless), plugins (30+ packages), converters (20+ framework adapters), tooling (CLI, bundler plugins, publish-microfrontend), utilities (debug utils, hooks utils), initializers (create-pilet, create-piral-instance), and samples. The system relies on external dependencies including React, Zustand, SystemJS (for legacy pilet loading), Webpack, and various framework-specific libraries. The codebase demonstrates strong engineering practices with extensive unit testing (Vitest), type augmentation for customization, and a consistent plugin/converter pattern that enables clean separation of concerns.