IsHUD is a tool that helps you keep track of which input source is in use without having to look at the upper-right corner of the screen. It helps you keep your eyes on the central area of the screen and your hands on the keyboard, even when using full screen mode.
Wineskin Winery creates Mac OS X ports/wrappers for Windows programs/games, with an easy-to-use GUI, integrated Wine, X11 and an installer.