PMDaemon is a Rust-based process manager inspired by PM2 that adds advanced features like automatic port range distribution for clusters, HTTP and script-based health checks, blocking start commands, and a modern REST API with WebSocket support. Built with async/await architecture using Tokio, it offers memory safety and high performance while maintaining a familiar PM2-like CLI interface. The tool includes 272 tests, configuration persistence, ecosystem file support with schema validation, and production-ready monitoring capabilities.