Among them of course the Turbo's.
Surprisingly, there is now quite a range of first rate development software that can be yours (legally) for a total outlay of Zero Dollars - which, at the current rate of conversion, coincidentally works out at precisely Zero Pounds, Euros and Yen too!
One particular IDE of interest for me is the PHP IDE, called qstudio, from Quadram software. This is an IDE for PHP development which looks amazingly like Delphi. QStudio is to be released this december, so keep an eye on it!