Flowkeeper

-- Pomodoro[1] by the book.

Flowkeeper is a Pomodoro® Technique desktop timer for power users. It is a simple tool, which focuses on doing one thing well. It is Free Software with open source.

Welcome to Timewarrior

Timewarrior is Free and Open Source Software that tracks time from the command line.

Welcome to Taskwarrior

Taskwarrior is Free and Open Source Software that manages your TODO list from the command line.
It is flexible, fast, and unobtrusive. It does its job then gets out of your way.