Recs.
Updated
Task Coach is a simple open source to-do manager to keep track of personal tasks and to-do lists. It is designed for composite tasks, and also offers effort tracking, categories, notes and more.
SpecsUpdate
Pros
Cons
Con Multiple users can access a file over a network, but there’s no web-based interface for straightforward collaboration
A task file may be opened by several instances of Task Coach, either running on the same computer or on different ones (on a network share for instance). When you save, Task Coach will merge your work with whatever has been saved on the disk prior. Conflicts are automatically resolved, usually by you winning the conflict.
This serves two use cases: 1) A single user opening the task file on several computers (work, home, laptop) and 2) several users working on the same task file.
The first case is the most common and the most secure. The second case may be dangerous. Most network disk sharing protocols do not support the kind of file locking that would make this 100% secure. A list of common protocols and their behavior can be found in the Task Coach help file.
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Comments
Flagged Pros + Cons
Con No collaboration possibilities as of December 2014
Making this a non-starter for the sharing of the Honey-Do list.