PM2 is a popular open-source process manager specifically designed for Node.js applications. It allows developers to manage and maintain server processes, ensuring uptime, load balancing, and efficient resource utilization. PM2 offers features like process monitoring, log management, and clustering, making it easier to deploy and run Node.js applications in production environments. Its user-friendly CLI and web-based dashboard provide insights into application performance and process status. The official website, https://pm2.io/, offers comprehensive documentation, installation guides, and access to the PM2 Plus services for advanced monitoring and enterprise-level features.