I’ve been playing with Parenscript and Websockets. I’ve made a small useful thing. Plot-window can be used to plot data from your Common Lisp repl. It displays the plot into a web page; you leave this web page up as you work, the plot function revises the web page on demand.
Here’s a little screen cast. That shows how to clone it from github, load it up, start a little embedded webserver, open the display page in the browser, and then finally we make a makes a few plots from the REPL.
Finally, this short video is a preview of how this might be extended to use a web browser as a generalized display for your lisp process, in this case a Parenscript form is evaluated in emacs which builds and animates a page (using D3JS and SVG).