SwiftyBeaver - SwiftyBeaver is a logging platform for Swift with end-to-end encryption.
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.
Seq - Seq is the easiest way for .NET developers to capture, search and integrate structured log events.
AppDynamics - Get real-time insight from your apps using Application Performance Management—how they’re being used, how they’re performing, where they need help.
Zabbix - Track, record, alert and visualize performance and availability of IT resources
Loki - Record 10 seconds a day & make a life movie.