Dropbox: My documents in the cloud.

OneDrive: Provides you with 15 GB of free space to use for storing documents, photos, or anything else you can think of.

Google Drive: Google gives you 15 GB of storage split between Google Drive, Gmail, and Google+.

Box: 10 GB of free storage space with this platform that syncs effortlessly between desktop, tablet and phone.

Flashbackr: A simple yet incredibly powerful way to save any content that matters to you.