Sentry.io - From error tracking to performance monitoring, developers can see what actually matters, solve quicker, and learn continuously about their applications - from the frontend to the backend.
AWS CloudTrail - AWS CloudTrail is a web service that records AWS API calls for your account and delivers log files to you.
AppSignal - We monitor the software that makes your customers happy.
Logmatic - Logmatic is a log centralization, analytics & visualization platform to improve software & business performance.
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.
log4net - log4net is a tool to help the programmer output log statements to a variety of output targets.