PM2 is a process manager designed for the Node.js runtime environment.

It is an open-source and production-ready manager that provides several key features, including automatic application load balancing, declarative application configuration, deployment system, and monitoring. PM2 is designed to keep applications running and reloaded without any downtime, and it also offers system administration tasks, as well as logging, monitoring, and application clustering management. At RiseServ, we use PM2 as an alternative to Kubernetes for deploying web applications.