TaskWarrior: A Powerful Command-Line TODO List Manager

TaskWarrior is a very advanced command-line Todo list manager. It lets you easily edit and manage your projects using the GTD method.

Among TaskWarrior features are:

• Huge list of commands 
• Theme support 
• Very extensible (External plugins/scripts, GUI/Web Front Ends, Vim shortcuts ...)
• Synchronization support
• GTD methods

ScreenShots:

#Calendar support

#Themes

Examples:

Show Calendar

task calendar

Add A Task With High Priority

task add priority:H <YOURTASK>

Show A List Of Tasks

task ls

The TaskWarrior official website offers an amazing set of tutorials:

• The Command Guide (Download the PDF file HERE)
• A 30 second tutorial
• Screencasts

TaskWarrior is a cross-platform application (Yes, you can run it on Windows through Cygwin). To install it on Ubuntu, simply add the following PPA to your software sources:

sudo add-apt-repository ppa:ultrafredde/ppa
sudo apt-get update
sudo apt-get install task