OnePager Pro for Microsoft Project - OnePager Pro builds Gantt charts, timelines and multi-project reports using data from Microsoft Project, Project Online, and Project Server.
Elegantt for Trello - The most elegant way to manage your Trello projects
Ganttify - Ganttify is a gantt chart software for visualization of activities and bottlenecks in a project.
Hello Epics for Trello - Simplify your Trello board with parent/child relationships
Office Timeline - Make impressive PowerPoint timelines with just a few clicks.
TunnelVision - See your next Trello tasks every time you open a browser tab