perf - Perf is a simple app monitoring solution paired with meaningful alerts.
Datadog - See metrics from all of your apps, tools & services in one place with Datadog's cloud monitoring as a service solution. Try it for free.
Treo - Treo is the page speed monitoring tool that helps your customers from obtaining a faster web experience.
Dynatrace - Cloud-based quality testing, performance monitoring and analytics for mobile apps and websites. Get started with Keynote today!
Deppbot - Continuous Updates - Based on your configured schedule, deppbot will run bundle update on your Ruby app and send the result as a Pull Request to GitHub.
Zabbix - Track, record, alert and visualize performance and availability of IT resources