Time management

Khronos is a free and open source simple program for logging time spent on tasks

KTeaTime – free and open source simple and handy software for steeping tea for Linux

GNOME To Do – free and open source personal task manager from GNOME

QuitCount – free and open source software that shows how much you extend your life and how much money you save by quitting smoking

Pomatez is a time management program based on the Pomodoro technique that will help you improve your productivity

KTimeTracker is a free and open source program that helps you track time spent on various tasks and projects

Pomotroid is a free and open source program. Simple, customizable and visually pleasing Pomodoro timer

Tea Time a simple timer application for Linux

KTimer – free and open source program for executing commands via a countdown timer