Trello offers many important PM & collaboration benefits. First and foremost, Trello is easy to use. The card system contains all possible nuggets of information about a project. Drag and drop functionality is helpful and the interface allows in-line editing. The website is also accessible from any browser, whether mobile or web-based, smartphone or tablet. It keeps things organized when the cards can be placed in lists to track the progress of a project, assign categories, or just keeps things neat.