Vector Clocks is a desktop alarm clock with beautiful graphics, rotation and scaling, will enable you to keep track of time. They can be placed anywhere on your screen, rotated with total freedom, resized to any scale and set in 3D perspective view without losing any quality.
Vector Clock is customizable. There are detailed Clock Options in the settings. It also nicely integrates with Your desktop - You can choose to pin the clock to desktop, use it as a normal window, keep it on top or even force it to foreground (when in click-through mode). Plus some other options, such as "hide on mouse over", "start with Windows" and "clock transparency" configuration.
Alarm function let You set up message and sound to play on due time (wav, mp3, midi). You can use it also as a simple countdown timer - after checking on the "Now plus" option, clock will compute a future alarm time based on delay you define (eg. after 5 minutes).
It is portable - the clock is just 870KB single EXE and you can put it on the USB stick to carry it around. No installation is required - just put it wherever You want (eg. on desktop) - and run it. To remove it - just delete the EXE file.
The license of this software is Freeware, you can free download and free use this digital clock & timer software.