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SPECIFICTION
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Keymetrics

pm2.io

From $79/mo Free plan WebLinuxAPISelf-hosted
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Spec score 8.1 #17 of 37 in Application Performance Monitoring

What it is

Keymetrics develops Node.js monitoring software around the open-source PM2 process manager. PM2 Plus provides a real-time web interface for production monitoring, including issue and exception tracking, deployment reporting, real-time logs, custom metrics, custom actions, and notifications through email, Slack, or webhooks. Applications and databases can be viewed together in real time or historically, with an aggregate view across applications. Its issue dashboard can identify when an error occurred, affected servers, the stack trace, the relevant code line, and logs from before the error. The @pm2/io library lets Node.js applications expose values, counters, meters, and histograms. PM2 Enterprise targets high-scale or critical Node.js services, adding customizable dashboards, threshold alerts, stored logs, and production CPU and memory profiling. Enterprise can run as an on-premise installation or as a dedicated or managed instance. Runtime is free; Plus is listed at $79 a month, and Enterprise pricing requires contact. Keymetrics supports API, Linux, self-hosted, and web deployments.

Spec sheet

Trial
The pricing page says a trial is possible by contacting the sales team; it does not state the trial duration.Read 11 Oct 2026 · pm2.io
Integrations
PM2 Plus notifications can be sent by email, Slack, or webhook.Read 11 Oct 2026 · pm2.io
Support
The maker provides a contact form for sales and general inquiries and lists separate support and technical contact addresses in its terms.Read 11 Oct 2026 · pm2.io
Custom metrics
The @pm2/io library lets Node.js applications expose custom metrics, including values, counters, meters, and histograms.Read 11 Oct 2026 · pm2.io
Deployment options
PM2 Enterprise is offered as an installable on-premise system or as dedicated or managed instances.Read 11 Oct 2026 · pm2.io
Enterprise audience
PM2 Enterprise is described as a toolset for high-scale or critical Node.js services.Read 11 Oct 2026 · pm2.io
Enterprise features
Enterprise adds customizable dashboards, threshold-based alerts, stored logs, and CPU and memory profiling that can be launched in production.Read 11 Oct 2026 · pm2.io
Issue debugging
The issue dashboard can show when an error occurred, affected servers, its stack trace, the code line, and logs from before the error.Read 11 Oct 2026 · pm2.io
Plan limits
PM2 Plus pricing counts monitored processes across linked servers, and processes above the plan limit are automatically ignored.Read 11 Oct 2026 · pm2.io
Product purpose
Keymetrics develops a Node.js monitoring tool for server infrastructure using the open source PM2 process manager.Read 11 Oct 2026 · pm2.io
Production monitoring
PM2 Plus provides a real-time monitoring web interface, issue and exception tracking, deployment reporting, real-time logs, email and Slack notifications, custom metrics, and custom actions.Read 11 Oct 2026 · pm2.io
Security and privacy
The privacy policy says Keymetrics implements measures to protect personal data and describes SSL encryption and PCI-DSS requirements for payment card information.Read 11 Oct 2026 · pm2.io
Server and app views
PM2 Plus shows apps and databases together in real time or through history, and provides an aggregated view across applications.Read 11 Oct 2026 · pm2.io

Plans and prices

Runtime Free Open source Process manager · zero downtime reloads · terminal monitoring · real-time web interface Read 11 Oct 2026 · pm2.io
Plus $79 a month Starts at $79/ Month Web monitoring · issue tracking · custom metrics · email/Slack notifications · server health checks · process limits apply Read 11 Oct 2026 · pm2.io
Enterprise Priced on request Contact us for more details Advanced profiling · transaction tracing · up to 1 year data retention · shared cloud or on-premise install · Go and Python integration Read 11 Oct 2026 · pm2.io

Every Keymetrics plan and price →

Strong points and limits

Strong points

  • Real-time logs and issue tracking
  • Email, Slack, and webhook notifications
  • Custom metrics through @pm2/io
  • On-premise or managed Enterprise deployment
  • Free Runtime plan available

Limits

  • Plus process limits apply
  • Paid plans start at $39/mo

Who it suits

It suits Node.js teams needing application and server monitoring, debugging, custom metrics, and deployment visibility. Enterprise features are aimed at high-scale or critical Node.js services.

Verdict

Keymetrics combines PM2-based process management with monitoring, debugging, notifications, and custom telemetry. Its free Runtime tier offers a starting point, while Plus and Enterprise add broader operational capabilities at listed or contact-based pricing.

Where Specifiction places it

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