Zabbix - Track, record, alert and visualize performance and availability of IT resources
MailStore - MailStore Home - A 100% free single-private-user desktop solution
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.
Gmvault - Backup the emails in your Gmail account.
Prometheus - An open-source systems monitoring and alerting toolkit.
SysTools Gmail Backup - Backup Gmail Emails, Contacts, Calendar, and Google Drive Storage File by SysTools Gmail Backup Solution