Free online storage:

Dropbox:    

 

I have been using Dropbox for a while and have 24 gig of free storage.  I invite my students each semester or have one of them invite the their classmate so they can get more storage.  The syncing app works great.  New accounts start with 2 gig of storage.

Copy by Barricuda

A new player in the cloud storage is called Copy.  New account starts with 15 gig of storage and 5 gig is added when you invite a friend and they accept.  The friend gets an addition 5 gig too when they accept the invitation to a new account.  Has a nice syncing feature much like Dropbox.

One Drive (formerly Sky Drive by Microsoft)

One drive functions much like Google Drive starting with 7 gig of storage and the web version of MS Office is available.  I have found this to be less stable with files not opening and getting an error message from MS.  This has a syncing app that works well.

Google Drive

Google Drive starts with 15 gig of storage with all the Google tools for docs, presentations, forms and more.  There is a syncing feature too.  The best part of Google is the integration with Gmail and the sharing and collaboration features are the best.

Warning:

Using multiple cloud storage can be confusing.  Remembering where you store files can be a challenge.  

•  Use one service for personal and use the other for business

•  Get a second Google account for business use.