CCleaner - CCleaner cleans, speeds up and frees up space on business endpoints.
Zabbix - Track, record, alert and visualize performance and availability of IT resources
BleachBit - When your computer is getting full, BleachBit quickly frees disk space.
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.
Wise Care 365 - Wise Care 365 is a bundle of important registry, disk, and other system utilities for your PC.
Prometheus - An open-source systems monitoring and alerting toolkit.