brickdots

Assign/Share a todo item to/with internal users by mentioning them.
<ol>
<li>Mention internal users when an admin wants to assign a todo item to colleagues by typing <code>@</code> when creating a todo item.</li>
<li>Mentioned users would get notification emails. A mentioned user would get an email with the todo item and the link to the edit page that the todo list is on. </li>
<li>Check your todo items on the dashboard. All your todo items (todos mention you) will be on your dashboard. You can go to the edit page by clicking an item.</li>
<li>
Create a todo list in many post types
These are the compatible post types.
<ol>
<li>Posts</li>
<li>WooCommerce Products/Orders/Coupons</li>
<li>Event calendar events</li>
<li>More to come</li>
</ol>
</li>
</ol>

Admin Todotastic

Admins can assign or share todo items attached to a post, a WooCommerce order, a product, and a coupon by mentioning internal users.

Harmonic Design

HDTasks. Project task management for teams and creatives
<h3></h3>
HDTasks is a simple and elegant project task manager for creatives and teams. With it, you can easily create an unlimited amount of projects, and share your task lists with clients or team members.
You can use this to keep track of project items, make notes, and improve productivity.

HDTasks | Client and Team Task Lists

HDTasks. Project task management for teams and creatives

Admin Todotastic vs HDTasks | Client and Team Task Lists