Nitro is the best way to organize with it’s speed, simplicity and power. With innovative features such as smart lists and magic sort, you can keep your life organized and focus on what needs doing. It’s also totally free.
Nitro can sync with Dropbox or Ubuntu One. You can easily access your tasks from any computer and you’ll never get a conflicted copy. Nitro also creates a todo.txt file so you can see or embed your tasks in plain text. Nitro is available for a variety of platforms, includes Mac, Chrome, and Linux. Nitro is free open source software under the BSD License. You can get it on Github.
Download Link: http://nitrotasks.com/
License: BSD License