Trello workers is a free Chrome add-on developed by jerome.raffalli. It falls under the category of Browsers and specifically the subcategory of Add-ons & Tools. This add-on enhances the functionality of Trello by providing task filtering and avatar coloration features.

With Trello workers, users can easily filter tasks based on their status. By pressing the 'o' key, users can activate the filtering of tasks that have active assignments. An assignment is considered active if it includes either the '@card' or '@username' tags and is not checked off.

Additionally, this add-on allows users to filter tasks that are pending for the connected user by pressing the 'p' key. This feature helps users focus on tasks that require their attention.

Moreover, users can filter tasks that are active for other users by pressing the 'i' key. This feature enables users to see the progress of their team members and coordinate their efforts effectively.

Overall, Trello workers is a valuable add-on for Trello users who want to enhance their task management experience by easily filtering tasks and color-coding avatars based on task status.