Re: Maple Vs Mathematica : How much of the source code?

> The reviewer prefers the Maple GUI and front end, and found
> the lack of a Mathematica debugger annoying.

Lack of a debugger is most annoying to beginner users, but
there are in fact 3 major builtin pieces missing in the kernel:

1) incremental debugger (or even a plain debugger)
2) error tracer
3) real-time breakpointer and "cook-timer"

I wonder: is there a functional language based application that
now includes those 3 components? The old vaxima (Lisp based)
I used during 1982-88 had some rudiments of 1) and 3)

.