14 ms·It's written in arc, a custom dialect of lisp that Paul Graham made.by beaconstudios 4y agoIt's written in arc, a custom dialect of lisp that Paul Graham made.mobilio 4y agohttp://arclanguage.org/forum http://arclanguage.org/forum Does look familiar with interface?memorable 4y agoIt does look a lot like HN, although slightly different in colors, font family, and nav bar.