Looking for a particular Common Lisp implementation

Question

I'm looking for a Common Lisp implementation I ran across once, sometime in the past year or two. I only remember a few things, and I don't know how to search for it based on these facts, so maybe somebody here can help.

• it was open-source, but wasn't one of the big ones (SBCL, CMUCL, MCL, etc.)
• it was likely incomplete; it looked almost more like an exercise in writing the simplest possible self-hosted Common Lisp
• the main webpage was plain black-on-white, and had 2 columns, where the left column was a link to the source file for a particular area of functionality (loop, format, clos, etc.), and the right column was a link to the tests for that functionality
• the source files themselves were pretty-printed for the web, with syntax highlighting that looked kind of like an old Redhat Emacs default config: slate-gray background, etc.

Where can I find this Lisp implementation?

Thanks!

Answer 1

Its hard to pin down, but open-source + minimalistic + incomplete sounds vaugely similar to Paul Graham's Arc programming language.

Answer 2

I don't know which one you are referring too, but you can find a list of Common Lisp Implementations here.

Is there any particular reason why this Lisp is grabbing your attention now?