RegEx Designer - Feel the raw power of RegEx!

RegexDesigner.NET is a powerful visual tool for helping you construct
and test .NET Regular Expressions. When you are happy with your regular
expression, RegexDesigner.NET lets you integrate it into your
application through native C# or VB.NET code generation and compiled
assemblies (usable from any .NET language).

 WoW!!!

https://www.gotdotnet.com/workspaces/workspace.aspx?id=01e0dfb7-0182-45cd-94f7-2ed2df2504a9 

This is every .NET developers treasure!