Log Monitoring

https://techtalk.gfi.com/the-top-20-free-network-monitoring-and-analysis-tools-for-sys-admins/

https://www.channele2e.com/2016/01/21/top-50-cloud-monitoring-and-management-tools-which-are-best/

https://newrelic.com

https://www.paessler.com

http://www.httpwatch.com