One of the most basic utilities supplied with any operating system is a clock utility. The clock typically resides in the taskbar /menubar, showing the current system time. Nothing very exciting there.
However, the clocks featured in this article are more sophisticated than the basic tray clock. In this article we pick the finest analog clock, timezone clocks, and alarm clocks that are available for Linux. They are all small, well-crafted, unobtrusive utilities that are released under an open source license, and add the perfect finishing touch to a well designed desktop environment.