TimerX

TimerX is a fantastic piece of software that's available for free, designed to serve as an effective timer for the Linux platform. This exceptional application is written in Gambas and is ideal for Gnome, although it functions seamlessly across most desktop environments.

With TimerX, you can quickly set a timer and receive a prompt notification the second it finishes. Furthermore, the notification is subtle enough not to distract you from your ongoing work.

In order to successfully use this application, ensure that you have the GTK+ version 2.2.x and Gambas2 Runtime Libraries.

Recently, TimerX released an update that comes with the following features: the ability to search for updates, deletion of chronometer feature, inclusion of new timer modes - "in" or "at", deletion of set-up button, a tooltip for Tray icon, addition of personalization mode, as well as an improved TimerX icon and notification mode. Additionally, the developers corrected some application icons for a better overall experience.

Overall, TimerX is a game-changing timer application that's readily available for Linux users absolutely free of charge.