zlacker

There are several IDEs for specific Lisps, like Dr Racket or the Lispworks implementation of Common Lisp. There's also Emacs, which is kind of like a Lisp-based IDE, and Slime is a really good Common Lisp plugin for it.

>>blast+(OP)
I tried Portacle, and my experience was utter frustration. Once you go astray, there's no way to know what is going on. It threw me into so sort of debugger, with no obvious way out.

Lispworks looks like exactly what I want, except it seems to be in the Delphi business model, thus I can't afford it.

DrRacket looks better... but it doesn't seem to be lisp?

I thank you for the lifeline. If only Borland had made TurboLisp back in the day.