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Keymetrics
What it is
Keymetrics develops Node.js monitoring tools around the open-source PM2 process manager. PM2 Plus provides a real-time web interface with issue and exception tracking, deployment reporting, live logs, custom metrics and actions, and notifications by email, Slack, or webhook. It displays applications and databases together in real time or historical views, including an aggregated view across applications. The issue dashboard can show error timing, affected servers, stack traces, code lines, and preceding logs. Node.js applications can expose values, counters, meters, and histograms through the @pm2/io library. PM2 Enterprise is aimed at high-scale or critical Node.js services and adds customizable dashboards, threshold alerts, stored logs, and production CPU and memory profiling. Enterprise can be installed on-premise or provided as dedicated or managed instances. Runtime is free, Plus is listed at $79 a month, and pricing starts at $39/mo; a 14-day trial is listed.
For and against
For
- Real-time monitoring web interface
- Issue tracking with stack traces and logs
- Email, Slack, and webhook notifications
- Custom metrics through @pm2/io
- On-premise or managed Enterprise deployment
Against
- Plus process limits apply
- Paid plans start at $39/mo
- Free Runtime lacks Plus monitoring features
The verdict
Keymetrics covers PM2-based Node.js monitoring from a free Runtime plan through Plus and Enterprise offerings. Its monitoring, tracing, custom metrics, and deployment choices support teams with different operational requirements.
Who it suits
Keymetrics suits teams monitoring Node.js applications and server infrastructure through PM2. Enterprise features are aimed at high-scale or critical services needing profiling, alerts, and flexible deployment.
Plans and prices
Runtime
Process manager · zero downtime reloads · terminal monitoring · real-time web interface
Read 11 Oct 2026 · pm2.io
Plus
Web monitoring · issue tracking · custom metrics · email/Slack notifications
Read 11 Oct 2026 · pm2.io
Enterprise
Advanced profiling · transaction tracing · up to 1 year data retention · shared cloud or on-premise install
Read 11 Oct 2026 · pm2.io
On the record
- Custom metrics
- The @pm2/io library lets Node.js applications expose custom metrics, including values, counters, meters, and histograms.pm2.io · read 11 Oct 2026
- Deployment options
- PM2 Enterprise is offered as an installable on-premise system or as dedicated or managed instances.pm2.io · read 11 Oct 2026
- Enterprise audience
- PM2 Enterprise is described as a toolset for high-scale or critical Node.js services.pm2.io · read 11 Oct 2026
- Enterprise features
- Enterprise adds customizable dashboards, threshold-based alerts, stored logs, and CPU and memory profiling that can be launched in production.pm2.io · read 11 Oct 2026
- Integrations
- PM2 Plus notifications can be sent by email, Slack, or webhook.pm2.io · read 11 Oct 2026
- 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.pm2.io · read 11 Oct 2026
- Plan limits
- PM2 Plus pricing counts monitored processes across linked servers, and processes above the plan limit are automatically ignored.pm2.io · read 11 Oct 2026
- 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.pm2.io · read 11 Oct 2026
- Product purpose
- Keymetrics develops a Node.js monitoring tool for server infrastructure using the open source PM2 process manager.pm2.io · read 11 Oct 2026
- 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.pm2.io · read 11 Oct 2026
- Server and app views
- PM2 Plus shows apps and databases together in real time or through history, and provides an aggregated view across applications.pm2.io · read 11 Oct 2026
- Support
- The maker provides a contact form for sales and general inquiries and lists separate support and technical contact addresses in its terms.pm2.io · read 11 Oct 2026
- Trial
- The pricing page says a trial is possible by contacting the sales team; it does not state the trial duration.pm2.io · read 11 Oct 2026
