"Lunabar puts a lunar almanack in your taskbar. It accurately shows the current phase of the moon, the times of moonrise, moon southing, and moonset, and the zodiacal constellation and sign. The phase, constellation or zodiacal sign is shown in a tooltip window when your mouse hovers over the icon, and a full lunar almanack is just a double-click away."

StarDate's Moon Phase Calendar provides the daily moon phase in a lovely, visual format, while StarDate itself explains what is happening in the heavens tonight.