alt Hacker NewsThere were a few Lisp editors a few years back Light Table was one and I forget there was another one but seems they were eventually discontinued. Those editors were kind of nice, they even showed you what every shortcut available could do visually the moment you held down the Control key.
Lem for Common Lisp is still active. Plus Emacs has always been around. And Racket's built in editor... I do miss Light Table though, it was very nice.