ELMAH (Error Logging Modules and Handlers) is an application-wide error logging facility that is completely pluggable. It can be dynamically added to a running ASP.NET web application, or even all ASP.NET web applications on a machine, without any need for re-compilation or re-deployment. (Unmaintained)
Error Logging Modules & Handlers for ASP.NET. This forked version implements a feature do use "size" parameter in order to limit the amount of files in the XML Error Log format.
a mvc framework built with many technologies and many smart solutions to make development easier , and it has many modules such as real time chatting , many plugins wrappers