Zabbix - Track, record, alert and visualize performance and availability of IT resources
Python - Python is a clear and powerful object-oriented programming language, comparable to Perl, Ruby, Scheme, or Java.
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.
Java - A concurrent, class-based, object-oriented, language specifically designed to have as few implementation dependencies as possible
NewRelic - New Relic is a Software Analytics company that makes sense of billions of metrics across millions of apps. We help the people who build modern software understand the stories their data is trying to tell them.
Rust - A safe, concurrent, practical language