Master CSS is a comprehensive CSS framework and toolchain that enables writing CSS directly in class attributes using a concise utility syntax. The system supports multiple rendering modes: a runtime engine that dynamically generates and injects CSS in the browser, a static build-time compilation mode for zero-runtime production output, and progressive hybrid modes that pre-generate critical CSS and hydrate on the client. It includes a fully modular architecture with over 30 packages covering a core engine, compiler, scanner for class extraction, validator, language server, ESLint plugin, CLI, MCP server, and first-class integration plugins for Vite, Next.js, Nuxt, Astro, Svelte, Webpack, and more. The codebase is production-grade with extensive unit and e2e tests, a dedicated benchmarking suite measuring CSS output sizes, build timings, and browser lifecycle performance, and a documentation site with interactive playground. While primarily a JavaScript/TypeScript application library, it also contains benchmark infrastructure that produces analytical metrics. The architecture is strongly layered with well-defined schema contracts (manifest JSON) enabling loose coupling between packages.
Supervizer is a Node.js process manager that provides CLI and RESTful API interfaces for spawning, stopping, and managing Node.js applications. It follows a client-server architecture where the supervizer-client communicates with a supervizer-server via HTTP to manage application processes. The server maintains application state in memory, supports process monitoring, file watching for automatic restarts, grouping of applications, and secure authentication. Key features include keeping applications alive on crash, resource monitoring (CPU/memory), log and PID file management, and JSON-based configuration persistence.