Hourglass Portable

If you are one of the users who like to use their computer for as many tasks as possible, then you are probably searching for nifty tools that can help you in your endeavors.
For example, Hourglass Portable can come in handy if you need a countdown tool that notifies you as soon as time has run out.

Portable timer with minimalistic looks

Since this application is a portable one, it means that, unlike Hourglass, it does not need to be installed onto your computer and that all its setting files are stored within the same folder where the executable is.
You can also copy it on a removable flash drive that you typically carry it with you, so you simply connect it to your PC whenever you need a countdown timer. Its GUI is kept as simple as possible, making it ideal for those who like straightforward looks.

Handy timer that supports varied source formats

To make the most of this utility, you need to enter the source time you are interested in - and this is where Hourglass Portable stands out from the crowd.
Since it is meant to be as flexible and as useful as possible, the application supports a wide range of formats, meaning that you can enter either 5h 15m 55s or 05/05/2015 5:00 PM without worrying that the timer does not start. Once you type the desired values, simply press Enter, minimize the main window and leave the app running in the background.

Play a sound or display a message when the time runs out

The app comes with a highly intuitive GUI that offers you the possibility to customize the timer's color and to choose the type of beep that should be played when time elapses (loud, normal or quiet). Any chosen timer can be looped and, if you accidentally close the app while a timer is running, it will be remembered so you can resume it.
All in all, Hourglass Portable can prove to be a versatile utility for all those who want to be reminded when the time runs out, without too much hassle.