Jettison lets you unmount external volumes by just closing your MacBook's lid (or putting your desktop Mac to sleep). When you hear Jettison's confirmation sound, it's safe to unplug and go.
FreeSpace is a handy menu-bar utility for keeping an eye on your free drive space, as well as for quickly accessing and unmounting volumes.
Looking for an easier way to add events and tasks to your calendars, and to get a quick overview of your schedule? QuickCal is an inexpensive solution.
Since we originally reviewed Fantastical and Moom, these Mac Gems have seen significant updates that warrant another look, as well as new ratings.
With gfxCardStatus, you can see when your dual-video-card-equipped MacBook Pro uses each GPU. You can even force the laptop to use integrated graphics when you're trying to conserve battery power.
Padlock lets you lock your Mac's screen, either by putting the display to sleep or by starting the screensaver, using the keyboard.
If you need to temporarily pause your music listening, Take Five resumes playback automatically, avoiding the all-too-common realization that you've been listening to nothing because you forgot to press Play again. It also provides a useful informational display for identifying tracks.
Yoink gives you a temporary place to stash files you want to move between folders, workspaces, or even full-screen apps.
Scroll Reverser lets you reverse Lion's scrolling by the type of device (trackpad, mouse, or tablet), as well as for just horizontal or just vertical scrolling.
If you want more options for creating keyboard shortcuts than Mac OS X provides on its own, but you don't need a complex macro utility, Shortcuts is for you.