DotNetMQ is a message broker (message queue, message oriented middleware) that has several features including guaranteed delivering, routing, load balancing, server graphs... so on. See article on CodeProject.com for more information: http://www.code
A graphical Windows ping utility written in C# that allows you to log and graph ICMP respones from multiple hosts. Includes a C# class library for ICMP and ping to use in your own program.
CuteIPConfig is a GUI tool which helps people quickly switch network configurations on their Windows. This tool is quite useful for laptop users. When they are moving, they just need to click one button to switch to new network with this tool.