Watch

Watch is a lightweight app that displays time on your desktop, in the digital mode. It can be seamlessly installed and configured, even by first-time users.
This is a portable software application, so installing Watch is not necessary. It means that you can store the app on a USB flash drive or any other removable device, save it to any computer and directly run its executable file on any computer.
More importantly, no leftover files may be found in the Windows Registry or on the hard drive after program removal.
The interface of the program is based on a very small frame. By default, time is displayed in white, while the background is black.
By accessing the right-click menu, you can disable sound, show the current date and day, as well as set an offset and schedule alarm. On top of that, you may enable to Watch to automatically run at system startup, as well as change the background and time color, along with the font name and size.
Watch comes packed with a built-in sound to be used for the alarm, but it also allows you to import your own audio track from the hard drive, as long as it has the WAV format. Plus, you can enable sound for the countdown.
The program has a good response time and barely leaves a mark on the computer's resources, as it uses a very low amount of CPU and system memory. Watch did not cause us any problems throughout our evaluation, such as making Windows freeze, crash or pop up error dialogs. Thanks to its intuitive layout and overall simplicity, Watch's configurable features may be easily figured out.