With the advancement in IT, there are multiple of free cloud storage providers in the world.You can use anytime in your life, but you must take care in choosing a provider who will offer the maximum amount of free storage, while still keeping your data safe. Followings are the free online storage provider. 
The flickr, online photo sharing website, offers one Terabyte space for the user. We can keep unlimited Photos with 1080 HD Quality. There is also a handy mobile app to allow you to upload files and photos, as well as sync clients with desktop machines.  
The Dropbox offers a 2GB of free storage and can be increased up to 16GB free of charge by linking your Dropbox to social media from personal Dropbox account. 
Google Drive
Google Drive is a natural choice for many Android users but users of other platforms may appreciate its free storage. Google Drive offers a 15 GB of free storage, you can store high definition photos on mobile phone and with app Google Photos
This is also free storage with heavyweights cloud storage.  There's a handy mobile app to allow you to upload files and photos, as well as sync clients with desktop machines. 
Free: 50 GB Sign up for Mega here
One Drive
One Drive (formerly Sky Drive) is integrated to file explorer. Microsoft's Photos app can also use One Drive to sync pictures across all your devices. There's an app for Android and iOS devices.
Apple provide the free 5 GB of storage and paid iCloud storage prices are also very reasonable. The Mac Finder app integrates iCloud Drive, where you can store any files you wish. Documents created in the iWork office suite are also saved to iCloud and can sync across your devices. 
Box's website currently seems to be pushing its business plans as clicking ‘sign up’ takes you to the biz subscription page where for $15 per user you can benefit from advanced collaboration options and unlimited storage. 
Free: 10 GB Sign up for Box here
Next Cloud
Next Cloud isn’t an online cloud storage provider itself, but offers free software to download and install a cloud storage service on your own server. Using a server on your home network for cloud storage is much faster.  
Free: Free to install and use. Sign up for NextCloud here
SpiderOak is part of a new trend of cloud storage providers. The website claims that after installing the client your data is encrypted before syncing.  
IDrive offers continuous syncing of your files, even those on network drives. The web interface supports sharing files by email, Facebook and Twitter. 
It is also free to sync large media files with pCloud. The service is available for all desktop and mobile platforms – users can also log in via the website.


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