Dateline is a slick little Mac app that adds a clean little one-line calendar to your desktop. You can adjust the width of the calendar, and change the window level so it's floating on top of your windows or flush with the desktop. Double-clicking on a date will open that date in iCal, so Dateline's minimal featureset isn't a liability at all.

A couple of tricks you should know about using Dateline: first, you can hide the dock icon using a checkbox in preferences. Second, without that dock icon, the fastest way to open Dateline preferences if you need to change something is by control-clicking the calendar strip. If you're having trouble doing this, switch the display level of Dateline to "desktop icons" instead of "desktop." Dateline is nothing revolutionary, but I often find myself opening Google Calendar in my browser just to see what day of the week some upcoming appointment falls on, and Dateline saves me the trouble.

[via Daring Fireball]