Opsmatic - Opsmatic offers complete system visibility and configuration monitoring for fast-moving technical teams.
Loader.io - Loader.io is a simple cloud-based load testing service
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.
Loadium - Performance Testing & Load Testing Tool
Guacamole - Access your computers from anywhere. Because the Guacamole client is an HTML5 web application, use of your computers is not tied to any one device or location. As long as you have access to a web browser, you have access to your machines.
LoadFocus - Cloud Testing Infrastructure | Cloud Testing Services and Tools for Websites & APIs.