Datadog
Datadog is a full-stack monitoring service for large-scale cloud environments that aggregates metrics/events from servers, databases, and applications. The SaaS-based data analytics platform helps Dev & Ops teams resolve performance issues, and ensure timely completion of dev/deployment cycles.
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Instrumental
Instrumental is a real-time, high-scale application and server monitoring tool with intelligent alerts, a powerful query language, and free development accounts.
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ntopng
'ntopng' provides an easy to understand, intuitive interface with a world of options and features to monitor your network.
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