HandBrake

an open-source, GPL-licensed, multiplatform, multithreaded DVD to MPEG-4 converter, for Mac, Linux, and Windows. Also includes Apple TV support.

UltraMon

Get the most out of your multiple monitor with UltraMon. Gives your configuration a smart taskbar, uses both displays one contiguous display for wallpaper and screensavers, save different configurations for easy access, and more.

TigerColor

Download page for some excellent color tools – ColorImpact, Ultra Color Picker, and Transparent ScreenRuler. The screen ruler is an indispensible tool for web design. In can be expanded horizontally and vertically to measure anything on your screen.