Zabbix - Track, record, alert and visualize performance and availability of IT resources
ManageWP - ManageWP is a service for bloggers, site owners and web based companies helping them manage multiple WordPress sites from one dashboard.
Observium - Observium
CrashPlan - CrashPlan for Small Business backup software offers the best way to back up and store business & enterprise data securely - offsite, onsite & online in the Cloud.
Nagios - Complete monitoring and alerting for servers, switches, applications, and services
Backblaze - Backblaze's remote backup automatically backs up your data to our secure datacenter.