My current favourite utility for Mac OS X is LaunchBar, which allows you to start apps, open web pages, send emails, with just an abbreviation of a few keystrokes. Particularly handy if you’re on a laptop, where the mouse-based routes for opening things may not be quite so convenient. The clever thing about LaunchBar is that you don’t need to set up the abbreviations in advance; it learns which keystrokes you’d like to use as you go along.
I’m not normally a huge fan of alternative launchers – the Dock has always worked fine for me. But I forced myself to learn and use LaunchBar for a few days and I got hooked. It’s very clever, and saves a lot of time, while using almost no screen space. Recommended. Good to see genuine innovation is still alive in the utilities world.