- xkcd: Functional http://xkcd.com/1270/ 21 comments scala
- xkcd: Functional http://xkcd.com/1270/ 298 comments programming
- xkcd - Functional Programming http://xkcd.com/1270/ 52 comments haskell
- XK3D. XKCD, now in 3D! function omgitsin3d http://xkcd.com/880/ 4 comments web_design
- The XKCD book page numbering explained (contains various js-functions to manipulate said numbers) http://www.barklund.org/blog/2009/11/24/xkcd-book-page-numbering-explained/ 15 comments programming