Zabbix - Track, record, alert and visualize performance and availability of IT resources
Aptum - Peer1 is an online platform for hosting, cloud, colocation, and connectivity services.
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.
10gbps.io - DataPacket is a dedicated server provider with data centers in 20 locations worldwide. Get high-performance servers with unshared 10 Gbps ports. Multihomed network with 10 TIER-1 transit providers. 24/7 live support over multiple channels.
Prometheus - An open-source systems monitoring and alerting toolkit.
Hostway - Hostway is a hosting platform for web developers and web designers that comes with many unique domains allow your web site to run efficiently and assists in complex hosting problems.