OpsDash!

An uncompromising mature enterprise-level platform designed for real-time monitoring of millions of metrics collected from tens of thousands of servers, virtual machines and network devices, effortlessly scaling to even larger environments.

Datadog is a monitoring service for IT, Dev & Ops teams who write and run applications at scale, and want to turn the massive amounts of data produced by their apps, tools and services into a unified view of IT infrastructure. Datadog's capabilities are provided on a SaaS-based data analytics platform that enables multiple teams to work collaboratively on infrastructure issues.

Icinga is a fork of Nagios and is backward compatible. So, Nagios configurations, plugins and addons can all be used with Icinga. Though Icinga retains all the existing features of its predecessor, it builds on them to add many long awaited patches and features requested by the user community. Icinga is an enterprise grade open source monitoring system which keeps watch over a network and any conceivable network resource, notifies the user of errors and recoveries, and generates performance data for reporting. Scalable and extensible, Icinga can monitor complex, large environments across dispersed locations. Icinga is licensed under GPL V2. »

Prometheus is an open-source systems monitoring and alerting toolkit originally built at SoundCloud. Since its inception in 2012, many companies and organizations have adopted Prometheus, and the project has a very active developer and user community. It is now a standalone open source project and maintained independently of any company.

Monitis is a Cloud monitoring and IT analytics service offering Website Monitoring, Server Monitoring, Network Monitoring, Application Monitoring, Cloud Monitoring, and Custom Monitoring.

IT monitoring has never been easier - lean back and let CloudRadar keep an eye on your servers, services and hosts. Up and running in minutes. No back doors.

Server Density offers unique SaaS-based scalable infrastructure monitoring to help businesses save time and money. With advanced server and website monitoring alerts, graphing tools and integrations with all major cloud service providers, Server Density’s robust and scalable solution helps businesses and IT operations teams be more responsive to issues, make their websites faster and minimise downtime.

Cloud Decision Engine's purpose is to help your making your way through the jungle of Cloud Computing services and offers.

Hosted Graphite is a monitoring service for development teams who run applications at scale. We take the data produced by your apps and servers, visualize it on graphs, then let you act upon the data provided by beautiful Grafana dashboards.

The Polyseer.io SaaS platform allows software developers as well as DevOps to automate cloud infrastructure monitoring. The real-time web-dashboard let's software teams create templated email, sms, and webhook alerts, write and manage infrastructure test, as well as establish complex incident response-plans. The platform supports a REST API alongside the officially supported Node.js and Ruby SDK.