I been looking around for some way of (regression)testing the WCF service we will build in my current project. I will not write another client and be forced to maintain it during the project. This took loads of time the last time I tried it. The thing I will settle on is SOAPUi, which seems just awesome. I have already written about it – but didn’t get the time to try it for real. I sure will now! But there are others – many of the free. Just see for yourself. A nice complement is WSDLDisco that creates a portal for your services. This is a way to open up for ad-hoc testing for project members that not is comfortable with XML or concepts as requests/responses.