Bulletlog - Aggregate logs, discover and fix errors in real time
Serilog - Backend Development and Utilities
observIQ Cloud - The intuitive log management platform that you actually want to use.
log4net - log4net is a tool to help the programmer output log statements to a variety of output targets.
Log Harvestor - Simple, modern & fast log management platform
Logmatic - Logmatic is a log centralization, analytics & visualization platform to improve software & business performance.