Recs.
Updated
Trello is a task manager built around the concept of ‘Kanban’ which is essentially a scheduling system that allows you to move your tasks from one state to the next.
The interface is built around the concept of a ‘Task board’ with columns for each state a task might be in (for example “to do, in progress, done”). The workflow is then to move tasks from one column to the next.
SpecsUpdate
Pros
Pro Great real-time team collaboration features
Trello has permissions at the board level as well as the ability to assign multiple people to each card. There are a lot of sharing options available and boards can be made visible to the public. It's also possible to subscribe to a card to be notified of its progress. The simplicity of the UI makes collaboration easy because it’s very simple to see the progress of each card and who is responsible for it. It also updates constantly to reflect real-time changes in progress.
The simplicity of the UI makes collaboration easy as it’s very simple to see the progress of each card and who is responsible for it. It also reflects changes on boards in real-time.
Pro Free for unlimited users
Trello offers a very generous free version that has no ads, no restrictions on the number of users, and very little restriction on how the program can be used. The paid features are generally cosmetic, such as the ability to change the background, add stickers, etc.
Cons
Con Subtasks lack features
Every task can have a list of subtasks which more closely resembles a standard to-do list.
These lack the functions that cards offer you. You cannot comment on a sub-list, give the sub-tasks due dates, or provide additional information. You are limited to only checking them off once completed.