several days ago, i wrote a article about the top popular FREE cloud services, i share it at steemit here, hope you will find it is useful.
google drive
microsoft onedrive
dropbox
icloud apple
elephantdrive
opendrive
box com
these are 7 of them, know more~https://hubpages.com/technology/Top-Free-Online-Storage-Services-Box-Dropbox-Google-Drive-OneDrive-and-More
Read next
From @blacktranquility