Zabbix - Track, record, alert and visualize performance and availability of IT resources
Google Authenticator - Google Authenticator is a multifactor app for mobile devices.
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.
Microsoft Authenticator - One app to quickly and securely verify your identity online, for all of your accounts.
Prometheus - An open-source systems monitoring and alerting toolkit.
LastPass Authenticator - LastPass is an online password manager and form filler that makes web browsing easier and more secure.