Top 20 NuGet logging Packages

Custom target for NLog to send logging messages to a Syslog server
Exceptionless client for ASP.NET MVC 3+ applications. Exceptionless is a cloud based error reporting service that sends your exceptions to https://exceptionless.com and provides aggregated views and analytics.
Exceptionless client for ASP.NET WebForms applications. Exceptionless is a cloud based error reporting service that sends your exceptions to https://exceptionless.com and provides aggregated views and analytics.
Exceptionless client for ASP.NET Web API applications. Exceptionless is a cloud based error reporting service that sends your exceptions to https://exceptionless.com and provides aggregated views and analytics.
Exceptionless client for WinForms applications. Exceptionless is a cloud based error reporting service that sends your exceptions to https://exceptionless.com and provides aggregated views and analytics.
Adds detailed tracing to any method without modifying your source code. Several backends are available as separate NuGet packages. An official PostSharp pattern library.
ELMAH error logger for sending errors to elmah.io. This package include initial configuration for getting up and running with elmah.io from ASP.NET, MVC, Web API etc. Consider using one of the specialized packages instead (Elmah.Io.Mvc, Elmah.Io.WebApi etc.).
NLog target that writes to the Seq event server over HTTP.
Log exception details and custom properties that are not output in Exception.ToString().
Exceptionless client for ASP.NET Core. Exceptionless is a cloud based error reporting service that sends your exceptions to https://exceptionless.com and provides aggregated views and analytics.
Serilog Sink that sends log events to Datadog https://www.datadoghq.com/
Catel.Core library.
JavaScript logging package that lets you log exceptions, AJAX timeouts and other client side events in your server side log. Supports ASP.NET 4.x (.Net 4.5.2+) and ASP.NET CORE (.NETStandard 2.0+).
Amazon Lambda .NET Core support - Logging ASP.NET Core package.
NLog target that sends logs to the logz.io bulk HTTP service
Castle Windsor logging facility lets you easily inject loggers into your components. It offers integration with most popular 3rd party logging frameworks like log4net, NLog and Serilog (see Castle Core docs).
The core Loupe Agent - a black box for recording diagnostic information for your .NET application. Download additional agent extensions for extended integration with different .NET subsystems and third party libraries
Exceptionless client for WPF applications. Exceptionless is a cloud based error reporting service that sends your exceptions to https://exceptionless.com and provides aggregated views and analytics.
Serilog sink for Loggly.com service
Pluggable foundation blocks for building distributed apps.