The current offerings for HPE Sitescope is available here; https://aws.amazon.com/marketplace/search/results?x=0&y=0&searchTerms=sitescope&page=1&ref_=nav_search_box

HP SiteScope software is an agentless solution for monitoring the availability and performance of applications and services running on Amazon Elastic Compute Cloud (EC2) infrastructures - including operating systems, network services, middleware, web-based applications, packaged applications and custom applications. HP SiteScope monitors more than 100 types of IT components through a web-based architecture that is lightweight and highly customizable. HP SiteScope can be used as a standalone monitoring tool or can be integrated with Amazon's CloudWatch monitoring services. With HP SiteScope, you gain the real-time information you need to stay ahead of problems and solve issues before they impact your customers.