- Taming multidimensional Arrays in Clojure (here, via @cgrand) -- How to speed-up access and manipulation of multidimensional arrays
- An an embedded DB library for Clojure (here, via @yuricake) -- It makes it very easy to store clojure data to the disk
- Clojure turns 2 (here, via @... everyone it seems)
- IntelliJ IDEA 9 will have a free community edition, which is also open sourced (here, via @emiliosuarez)