I have many Microsoft Project files but use a Mac. I switched to ProjectLibre and simply opened all my project files in ProjectLibre and kept working. The Gantt Chart, Network Diagram, WBS chart along with advanced features like Earned Value costing all work identical to MS Project.
This is AMAZING software and open source!!!!
Mavenlink - Resource planning, time tracking, project financials, collaborative project management, and performance analytics all wrapped up in one intuitive solution.
Microsoft Project - Microsoft Office Project gives you robust project management tools with the right blend of...
TargetProcess - Agile Project Management Web Application
GanttProject - Project scheduling and management tool
Vanillaplan - Intuitive construction software for resource and capacity planning
OpenProject - OpenProject is an open-source project management software with a wide set of features and plugins.