I've used this tool that microsoft ships with visual studio because it's quick and dirty
http://msdn.microsoft.com/en-us/library/bb552364.aspx
But it's kinda clunky and hard to work with. Are there any other useful test clients out there that you use and don't require creating a new visual studio project and compiling code?
EDIT: I'm looking more for a graphical test tool that I can use to do quick ad-hoc tests of systems in our different environments without having to write a bunch different tests.