emscripten - Compile LLVM bytecode to JavaScript, with loop detection etc. It's even usable to compile non-trivial C/C++ code to JavaScript. The author sees, for example, a purpose in porting existing game code to the JavaScript world, so it's quite serious. No indication whether you can boot a Linux kernel on a website with it ...
Archive 30. August 2010
lambdaj - brings Java anonymous functions and higher-order functions (well, at least approximations of these).
nakkaya's static at master - GitHub - static site generator for websites in Clojure.
Project Aon: Main / Home (browse) - what you might come across on the net. Official online versions of "hyperlinked" stories - namely the Lone Wolf books. Quite well-made "interactive" books. And as websites with links and a notepad as a notepad, quite fun to play through.