O n l i n e - C l o u d

One Drive - Windows 10 - 5 Gigs Free
 
https://onedrive.live.com/about/en-gb/signin/
 

Dropbox - 2 Gigs Free Storage - Up To 20 Gigs Per Accepted Referrals  ( + 500 MB Incremented )

https://help.dropbox.com/accounts-billing/space-storage/earn-space-referring-friends
 

Google Drive - 15 Gigs Free Storage 

https://www.google.com/drive/
 

Box - 10 Gigs Free Storage - ( 250 MB Per File Upload Limit )

https://www.box.com/home
 

Mega.nz - 50 Gigs Free Storage 

https://mega.nz/
 

Sync.com - 5 Gigs Free Storage - ( Up To 25 Gigs Vie Referral )

https://www.sync.com/
 

P- Cloud - 10 Gigs Free Storage

https://www.pcloud.com/onedrive-promo/