iPython, numpy, sklearn, pandas (Anaconda basically). Have been looking into Clojure so have set up lein, but so far I haven't found a good project to try and learn it for.
Away from data science specifics I work a lot with plain text files for task management and use LaunchBar and Taskpaper on OSX to manage them. Have been switching between vim and Sublime, but honestly I think I'm just going to stick to Sublime, it's what's comfortable and similar to everything else I use.
