Zabbix - Track, record, alert and visualize performance and availability of IT resources
DBeaver - DBeaver - Universal Database Manager and SQL Client.
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.
DataGrip - Tool for SQL and databases
Prometheus - An open-source systems monitoring and alerting toolkit.
MySQL Workbench - MySQL Workbench is a unified visual tool for database architects, developers, and DBAs.