Google is giving users 5GB of free file space with Google Drive; which is compatible for PC, Mac and Android Devices. Google Drive will be available soon for iPad & iPhone devices.
A feature to note is the ability to collaborate with co-workers & friends on the same documents, spreadsheets and presentations. Shared files will show changes made immediately to all contributors. Another great feature to mention is the ability to open 30 different file types in your web browser. This includes HD videos and Adobe files such as photoshop, illustrator and indesign.
Google Drive tracks every change made to a file. When a file is saved, a new revision is stored in the account. View file revisions in the past for up to 30 days automatically. Users also have the option to save a revision forever.
Learn more about Google Drive here.