Lisp's Eclipse is called GNU Emacs and it's free software. It comes with more than a million lines of Lisp code supporting all kinds of development tasks.
It's also not Common Lisp. I get that emacs lisp is a pretty good example of a lisp, but I do find it interesting that the Lisp designed to be the widely-applicable industry standard hasn't seen something on the same level.
> So what's stopped these from getting to Emacs' level of popularity?
Emacs is not an editor. Emacs is a family of editors. You are probably talking about GNU Emacs.
They never tried and it would not make sense. GNU Emacs exists already and supports Lisp development very well. The other tools have concentrated on other things: GUI-based IDEs for Lisp.
> Emacs is not an editor. Emacs is a family of editors. You are probably talking about GNU Emacs.
You tell me, you brought it up!
> They never tried and it would not make sense. GNU Emacs exists already and supports Lisp development very well. The other tools have concentrated on other things: GUI-based IDEs for Lisp.
Emacs is for more than Lisp development, though. It's not popular because you can do Lisp in it, it's popular because you can do everything in it. So we're back to my earlier question, which is why we haven't seen major, broad-based wins for Common Lisp, on the scale that we have for other languages.