If you need a task manager application to run on your Linux operating system, tap into a software category filled with options that go far beyond the to-do list app you have stuffed into your smartphone. Keeping up to date with multiple daily activity calendars, tons of information, and never-ending must-do lists can become a never-ending challenge. This week's Linux Picks and Pans reviews the top open source task management and to-do apps that will serve you well on most Linux distributions.