Anyhow, for the record Turbo PHP is a drag-and-drop PHP application design tool that looks (at first sight, anyhow) very similar to Code Gear’s Delphi For PHP. It was, in fact, written in Delphi. Apparently several commercial components were used, however, and these will have to be replaced by anyone doing further open source development.
Nice at it looks, I’m not entirely sure if Turbo PHP is going anywhere. I’m not sure if Code Gear’s Delphi For PHP is either - which seems a shame as a truly visual designer for PHP web applications sounds as though it should be a winner. But there are few signs that the PHP community is rushing to embrace these products...
Anyhow, if you are interested, Turbo PHP can be found here: http://www.turbophp.com/.