Question: I'm looking for a solution that provides real-time monitoring of system resources and database activity to optimize application performance.

If you want a more all-purpose tool to keep tabs on system resources and database activity, Datadog is a good option. Datadog has a range of features, including infrastructure monitoring, APM, synthetic monitoring and security monitoring. It supports a lot of cloud companies and can be extended with APIs and client libraries, so it's good for a lot of different companies.

Another option is FusionReactor, which is geared for Java and ColdFusion applications. It monitors performance in real time, profiles performance and monitors databases. FusionReactor's AI-based optimization can spot problems and correct them to improve application performance and reduce downtime.

If you want a hybrid observability tool, check out LogicMonitor. It offers real-time monitoring and automation for on-premises and multicloud environments. Its monitoring spans infrastructure, cloud and digital experience monitoring, and it has AIOPS tools to predict and prevent IT problems. LogicMonitor is designed to scale and to be secure, so it should work for many industries.