Thank you for the responses. Regarding PHP, many of the mature applications use PHPLib, which offers database abstraction for mysql or postgresql. I must say, a better way of forming the porting question would have been: What would it take to port ACS to PHP? But, this is a question most appropriate for the PHP community.
Back to practical matters, some news of interest. TCL Pro IDE has just gone GPL:
http://dev.scriptics.com/software/tclpro/
A port for Perl on AOLserver ACS is in the works:
http://sourceforge.net/forum/forum.php?forum_id=44367
Regards,
