This app lets you view mpp files without the need to install MS Project.
It is a fast and light weight app that reads the native .mpp file format and does not require any previous installation of Microsoft Project on the user's computer.
Provides connect with Google Drive. You can open a MPP file from Google Drive.

Viewer for Microsoft Project, Open and Print MPP Files.
Compatible with Microsoft Project 98, 2000, 2002, 2003, 2007, 2010 and 2013.