trello+ is a Chrome extension developed by William M Hayes. It falls under the category of Browsers and specifically the subcategory of Add-ons & Tools. This free extension aims to enhance the user experience of Trello by providing configurable, high contrast user cards.

With trello+, users can easily identify the Trello cards they are attached to, thanks to the highlight feature. This makes it convenient to keep track of your own cards, especially when working on collaborative projects. The extension also offers support for subscribed lists and cards, allowing users to stay updated on the progress of their subscribed items.

In version 1.4, trello+ introduced compressed cards, which helps optimize the layout and make better use of screen space. Additionally, version 1.5 added image dimming to dimmed cards, providing a visually pleasing experience. The latest update in version 1.6 improved avatar identification, making it even easier to recognize cards associated with specific users.

Overall, trello+ is a useful Chrome extension for Trello users who want to customize their card appearance and improve their workflow. It offers valuable features that enhance the visual clarity and organization of Trello boards.