Interactive Lisp development with Emacs has been around longer than that. The first commit for SLIME, which is a (third-generation, I think) Lisp development e

Interactive Lisp development with Emacs has been around longer than that. The first commit for SLIME, which is a (third-generation, I think) Lisp development environment for emacs, is from September 2003: https://github.com/slime/slime/commit/2fb4c4e53b59ed7b6e5f55780574a1016c0e5074 https://github.com/slime/slime/commit/2fb4c4e53b59ed7b6e5f55... (and the comment implies that there was development before then). Visual Studio has been around since 1997 (which is pretty cool!). Emacs has been around since 1976, although I don't know how far back it got a decent Lisp development environment. Early 80s, maybe?