Prometheus - An open-source systems monitoring and alerting toolkit.
Zerto - Virtual replication & recovery solution
Nagios - Complete monitoring and alerting for servers, switches, applications, and services
Macrium Reflect - Macrium Software - the creators of Macrium Reflect backup, imaging and cloning software.
StatsD - Simple daemon for easy stats aggregation.
Arcserve UDP - Arcserve UDP is data backup & recovery software that deals with unified data protection solutions, making you protect your computer system by creating data stores on the recovery point server.