JSMonitor.io is described as 'Monitor actual user JavaScript errors as they happen. JSMonitor features real-time alerts, prioritization, and tracking features to squash JavaScript errors forever' and is a Error Logger in the development category. There are more than 10 alternatives to JSMonitor.io, not only websites but also apps for a variety of platforms, including Linux, Mac, Windows and SaaS apps. The best JSMonitor.io alternative is Grafana, which is both free and Open Source. Other great sites and apps similar to JSMonitor.io are Datadog, Graylog, Prometheus and Grafana Loki.