Free Microsoft Project Viewer: Open MPP Files

Key Features

• Free MOOS Project Viewer is a free online MS Project viewer that can open any MS Project file type (.mpp, .mpt, .mpx, .xml) for any Microsoft Project version (2000, 2003, 2007, 2010).
• It is running on any Java enabled platform including Windows, Mac OS X and Linux and it is the perfect solution for project stakeholders to view the project details in a dynamic way.
• The viewer can also be run online directly from any browser.

Technical Specifications

• **Publisher:** Free-project-viewer.com
• **License:** Freeware
• **Operating System:** Windows 7, Windows 8, Windows 10, Windows 11
• **Last Updated:** October 15, 2025
• **Category:** Business / Project Management