GoodGantt is the app, that offers a deep integration with Trello. Here you can choose to view all your boards on the same screen or disable what you don't need. GoodGantt allows to build complex dependencies, open Trello cards or change tasks' names right in the chart, add milestones, and create group tasks. In the Availability panel, you can analyze your employees' current workload and reallocate tasks when necessary. It's possible to connect your favorite time tracker to see how your team members are doing in real time.