These are the little apps that are at the very top right of your menu bar. I only have few, but you'll find a few more in /System/Library/CoreServices/Menu Extras/. You'll find a whole lot more at super OS X menubar items.
Most are free; some are a few dollars. There's quite a variety of mail checkers, launchers, clocks, weather forecasts and the like. There are apps to run shell scripts, Applescript and even one to change process priorities. There are several iTunes apps, a number of system monitors and more.
There are far more little apps than the menu bar has room for, though, limiting their usefulness.
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More Articles by Tony Lawrence © 2009-11-07 Tony Lawrence
Basic happened to be on a GE timesharing system that was done by Dartmouth, and when GE decided to franchise that, it started spreading Basic around just because it was there, not because it had any intrinsic merits whatsoever. (Alan Kay)