I've been after something like this for ages. While I've generally always had my goto font for the terminal and editor, I've never really gone out of my way to decide which font really works for me.

This site does a great job of making it a "scientific" test, kinda.

A programmer's editor written in Common Lisp, written for Common Lisp, which aims to be a good Common Lisp IDE; but which also works as an IDE for other languages too.

Think Emacs in Common Lisp.