What is NLog?

NLog is a .NET logging library similar in concepts to log4net, designed with simplicity and flexibility in mind.

Features

• .NET, .NET Compact Framework and Mono 1.0 support
• very easy to configure, both with a config file and programmatically
• easy to use - interface is identical to Console.WriteLine - there's no need to use String.Format any more
• supports .NET, C/C++ and COM interop API

NLog is open source, licensed under the terms of BSD license, which permits commercial use. Everyone is encouraged to test it and report feedback to the mailing list.

The logging API is modelled after log4net with some extensions that help it achieve great speed as described here.