Free displays time software for windows

Titlebar Time is a small application that, once started, the day of the week, the date, and the time will be displayed in the active windows title bar.
You do not have to set the day, date, or time. Titlebar Time gets this information from your computers operating system

Yet another binary clock. Can show either a vertical or a horizontal clock. Its also possible to configure colour.
Nibble Time widget allows you to view the time displayed in a binarry manner.
You can custom this binary clock to suite your taste,

A simple Widget that shows the date and time on one single line. The date and time format can be customized and three different skins are available.
At the moment three languages are also available: English, French and Spanish.

Karens Time Cop displays a large clock that shows the time remaining (or elapsed time) for a user-selected period No more meetings running overtime! Teachers, time your exams! Cooks, time your favorite recipes! Whether youre studying , excercising, or just taking a nap at work, you need Karens Time Cop. :)
Karens Time Cop displays a large (up to full-screen) clock that shows the time remaining (or elapsed time) for a user-selected period. Once the selected amount of time has passed, your message is displayed, and your .wav, .mid, .mp3 or .avi file is played.

650 World Time is a widget which will display your current time and time zone (actively updating your time zone and time when you change w/ system preferences) and 6 other time zones that you can set yourself.
Accurate after sleeping, calculates fractional time zones (those which are 30 mins off as 0.5).