[Trello] is a free (for our purposes) web-based list-making application, that works very well for implementing Dozen. Note that Trello itself is not the Dozen system, much like Microsoft Word is not a great American novel. It’s a great tool for making one, though!
How to make a Trello account.
Trello’s parent company is Atlassian.
Or you can sign in with your Google account.
Trello tools
Trello – browser version
This is the most functional and easiest version of Trello to use, so it’s advised for whenever you want to do some serious work in your system.
Trello mobile app
Trello has robust apps for both [Android] and [iPhone], which you should install so your system can be with you wherever you go.
Trello widget
The mobile version for Android includes, a super useful home screen widget that lets you add something directly to your INBOX list in a couple of taps, and get right back to what you were already doing. This is a wonderful addition, with very little friction.