Real World Haskell
I want to learn FP properly, and Haskell seems like the best language to learn with, as it "forces" you to write functional code.

Underscore.js
Underscore is a utility-belt library for JavaScript that provides a lot of the functional programming support that you would expect in Prototype.js (or Ruby), but without extending any of the built-in JavaScript objects.

Mathematics and Computation » A Haskell monad for infinite search in finite time
I show how monads in Haskell can be used to structure infinite search algorithms, and indeed get them for free.

Relevance Blog : The Case for Clojure
"Design Patterns are a disease, and Clojure is the cure." interesting.

Open Quark
Open Quark provides Java with a compiled, highly efficient embedded lazy functional runtime, a native language “CAL”, and a bevy of APIs and tools for developing production Java applications that leverage the benefits of the functional paradigm as a...

NixOS
A "purely functional package management system" which manages the complete system configuration in a reproducible, versionable (?) way