Which is the best implementation of LISP family of languages for real world programming ?

[Benjamin Kaplan]

On Fri, Jun 11, 2010 at 11:03 AM, Chris Hulan <chris.hulan at gmail.com> wrote:
> Haven't used it but Racket (http://racket-lang.org/) looks to be a new
> and improved Scheme
>

The language isn't new, just the name. Racket is the language formerly
known as PLT Scheme. They decided that they made enough changes from
R5RS that they should rename it.  That way, when people ask questions,
it's clear that they're talking about the PLT variant of Scheme and
not the main standard.