I recently connected my MacBookPro to my audio receiver over HDMI to play a movie with VLC and try out the Steam in home streaming. I noticed that the audio was not coming out of all my speakers.
Programs iTerm2 - Terminal with nice split screen support and better fullscreen options SublimeText - Cross platform text editor SourceTree - Visual Git client nvAlt - Quick note taking and searching MouApp - Markdown Editor join.me - Screen sharing GrandPerspective - Not quite as nice as WindirStat but pretty close and the price is right. Charles - Proxy app much like Fiddler but for Mac OSX Plugins Spectacle - Window manager that works great and is free.
Here are some hot keys and preferences that make life in Xcode much better.
List of some useful open source tray tools I use daily.