SS-Lisp is an experiment I've worked on in my free time, rather sporadically, for several months. It's a Lisp compiler that runs in a browser. It compiles Lisp to an intermediary “bytecode” and it provides a virtual machine to run the compiled code with acceptable speed (I recommend Chrome or a derivative browser for “acceptable” to stand true). It provides an “IDE” which mimics Emacs/SLIME, via