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!!!!
Microsoft Project - Microsoft Office Project gives you robust project management tools with the right blend of...
UpSlide - UpSlide helps you produce high-quality reports and presentations faster in PowerPoint, Excel and Word. Save up to 12h each month with just a few clicks!
GanttProject - Project scheduling and management tool
Excel Dashboard School - Free Excel add-ins and tools on Excel Dashboard School. Boost your work productivity and save your time! No trials, 100% power!
OpenProject - OpenProject is an open-source project management software with a wide set of features and plugins.
Kutools for Excel - A handy Microsoft Excel add-ins collection to free you from time-consuming operations.