thlorenz/replpad ยท GitHub
https://github.com/thlorenz/replpad
Watches specified files and pipes or requires them inside a node repl when ever they change.
Benvie/Node.js-Ultra-REPL - GitHub
https://github.com/Benvie/Node.js-Ultra-REPL
Starting with Node's built in REPL, add in a completely redone inspect formatter, actual functioning separate V8 contexts, keybindings to create, switch, and delete between them, combine it with a bunch of color. ULTRA REPL
Lisp REPL in Vendetta Online
http://www.a1k0n.net/2005/11/04/lisp-repl-vendetta-online.html
Vendetta Online has a Lisp environment (using SBCL) which controls much of its NPC behavior and will soon be in charge of generating player and NPC missions. Partly in order to get around some thread-safety issues, and partly for convenience we built an REPL into a secret chat channel. (it only responds to developer accounts)