Sarbyx TrayClock

Sarbyx TrayClock is a simple clock that is placed on the system tray and replaces the standard clock that comes with Windows.

The clock offers lots of skins to change when you get bored and is available in multiple languages including English, Spanish Portuguese, Italian, Russian, Chinese, Japanese, and many more. Apart from the 50 skins covering different themes, the clock also allows you to use Winamp skins, adding even more options. You can customize the clock to show seconds, day of the week, and date. You can also set it to have a transparent background, show date on the left, and use 12-hour format. Unfortunately, the clock doesn't come with a calendar, alarms, or reminders that would make it more complete and useful.
All in all, Sarbyx TrayClock is a simple but nice clock to replace your old Windows clock, which offers a few more options than the latter, but still lacks some important functions that would make it even more attractive to compete with other similar clocks that you can find out there.