PM2

pm2.io

Production-grade process manager for Node.js applications with over 600 million downloads.

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Overview

PM2 is a production-grade process manager for Node.js applications with over 600 million downloads. It provides zero-downtime reloads, real-time monitoring, and clustering capabilities to help developers manage and scale Node.js workloads reliably.

The platform offers three tiers: PM2 Runtime (open-source process manager), PM2 Plus (monitoring and exception tracking), and PM2 Enterprise (advanced profiling, distributed tracing, and on-premise deployment). PM2 also includes an AI Assistant powered by Model Context Protocol (MCP) that integrates with Claude, Cursor, and other AI tools to provide insights into server status, metrics, logs, and alerts.

Key features

  • Zero-downtime reloads
  • Cluster mode with load balancing
  • Real-time web monitoring dashboard
  • Exception and bug tracking
  • Custom metrics and alerts
  • Email and Slack notifications
  • Memory and CPU profiling
  • Distributed tracing (Enterprise)
  • MCP-compatible AI assistant integration
  • On-premise deployment options
Pros
  • Over 600M downloads with proven track record
  • Open-source runtime remains free
  • Simple setup with npm install
  • Comprehensive monitoring without SSH access
  • AI assistant integration for intelligent insights
  • Flexible deployment (cloud or on-premise)
  • 12+ years of active development
Cons
  • PM2 Plus has no free tier (starts at $39/month)
  • Exceeding process limits results in random process ignoring
  • Enterprise features require custom contact
  • Learning curve for advanced features like custom actions
Use this if
You need production-grade Node.js process management with real-time monitoring, want to avoid SSH access to servers, require clustering and load balancing, or need AI-assisted infrastructure insights.
Skip this if
You're running non-Node.js applications, prefer fully managed serverless platforms, or don't need monitoring features beyond basic process management.

Best for

Node.js production deploymentsApplication monitoring and error trackingCluster management and load balancingReal-time performance analyticsEnterprise-scale infrastructureTeams needing zero-downtime reloads

Alternatives

ForeverStrongLoop Process ManagerSystemdDocker with orchestrationKubernetes

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