Brenton Ashworth introduces the Pedestal application library as a way to build rich collaborative applications in Clojure and ClojureScript.
Paco Nathan reviews an example data analysis application written in Cascalog used for a recommender system based on City of Palo Alto Open Data.
Rich Hickey discusses the motivation, design and use of the Clojure core.async library.
Daniel Gregoire introduces Gershwin, a stack-based, concatenative programming language with a Clojure runtime that targets the JVM.
Gary Fredericks shows some tricks for getting the most out of Clojure obfuscated code.
Antoni Batchelli introduces VMFest, a PalletOps project used to turn VirtualBox into a lightweight cloud provider, good for developing cloud automation.
Dave Ray explains using RxJava in Clojure for building non-blocking "Observable APIs" and efficiently compose asynchronous flows together using functional reactive operators.
Craig Brozefsky introduces clj-mook which provides a session abstraction for client interactions with a web application based on clj-http, a handful of threading macros, JSoup, and a couple of maps.
Joshua Ballanco introduces Immutant, Immutant Overlay, HornetQ and OpenShift to Ruby and Rails developers.
Reid Draper discusses lessons learned from Erlang that can be applied to Clojure (lighting talk).
Roman Gonzalez and Tavis Rudd discuss techniques for shortening the ClojureScript development cycle by using the same codebase for clj and cljs and automatically running tests on the JVM.
Daniel Spiewak discusses how modern languages such as Scala, Clojure, and Haskell have moved beyond the simple lambda calculus paradigm, being better suited for large application architectures.