Microsoft SharePoint Designer 2007. That’s right; SPD is now free from http://www.microsoft.com/spd [Update] See Tom Rizzo talking about why MS has made SPD free http://www.youtube.com/watch?v=cvvVJamO3nQ SharePoint Work Acceleration Toolkit 2007 aka (SWAT). http://www.idevfactory.com/products/swat/default.aspx