Zabbix - Track, record, alert and visualize performance and availability of IT resources
PyCharm - Python & Django IDE with intelligent code completion, on-the-fly error checking, quick-fixes, and much more...
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.
Thonny - Python IDE for beginners
Prometheus - An open-source systems monitoring and alerting toolkit.
Spyder - The Scientific Python Development Environment