DataDog Log Management - DataDog Log Management is a trusted and nimble software that is surfacing the log analysis with complete visualizations and prediction.
Zabbix - Track, record, alert and visualize performance and availability of IT resources
LogicMonitor - LogicMonitor is the SaaS performance monitoring platform for the world's best IT teams. Deploy Fast, Monitor More, Improve Ops.
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.
GoAccess - Open source real-time web log analyzer and interactive viewer that runs in a terminal in *nix...
Prometheus - An open-source systems monitoring and alerting toolkit.