If you are a Google Drive user check out this awesome Google Extension, called Checker Plus for Google Drive.
Quickly browse your Google Drive files without opening a webpage and get notifications of modifications to your shared documents
• Browse, open, search or delete your files and documents right from a browser button (without waiting for Google Drive’s page to open)
• Get desktop notifications when any of your files/documents are modified or updated by a shared user
• Supports push notifications
I have found this to be a great way to monitor project progress as others are updating shared drive folders. Whether you are working with students or other teachers on your team, if you use Google Drive, this is a great workflow tool.