C# Logging libraries are a very important part of any software application. They are used by developers to track the progress of an application and to find out what went wrong. Logging is a necessary part of any software application, but it can be time-consuming and tedious to write the own logging code. It helps to monitor the behavior and performance of the app, as well as help in debugging errors. It helps to debug and troubleshoot the errors in the application. It also helps in identifying performance issues and bugs that might occur in the application. Developers tend to use some of the following C# Logging open source libraries are: NLog - Structured Logging for Various .NET Platforms; serilog - Simple .NET logging with fullystructured events; DiscordChatExporter - Exports Discord chat logs to a file.