clooj, a small IDE for clojure (here via @sbtourist). The IDE is written entirely in Clojure and uses Swing for the GUI. There is a self-contained jar available for download.
Borrowing Haskell's Either for Clojure Error Handling (here via @marrowboy_co_uk). This post shows how to replace let-if with Haskell style either using a couple of left/right convenience functions.
Introduction to Logic Programming with Clojure (here via @ambrosebs). Very nice introduction to logic programming. Uses a type checker as example.
The Wednesday NYC Clojure Meet-up will be streamed live (here via @chrishouser). Apparently Rich is going to present something new and shiny - oooooh we like shiny.
Zi, the maven plugin in clojure(here via @palletops). An alternative to leiningen and cake. The plugin uses a non-forked execution model which according to the author should make it faster than the incumbents.