clipt is CLI (Command Line Interface) Pomodoro Timer. Although the name mentions command line, but it is flexible to be equipped with and support a GUI interface. It's a multi-user program written in C for Unix that allows each user of the system have their own Pomodoro timer.
The mission of libshell is to keep in place all patterns, functions and etc of shell as a library which are useful in day-to-day work activities. With libshell one can definitely obviate the task in hand.