Difference between Dropbox and Backblaze B2

1. Dropbox :
Dropbox is a file hosting service provided by the American company Dropbox Incorporation. It offers cloud storage, file synchronization, personal cloud and client software. It was founded in 2007. Dropbox was developed by two MIT students Drew Houston and Arash Ferdowsi. It offers only 2 GB free storage space. Maximum file size is 100 MB for free, 2 GB for paid Plus plan 100 GB for paid Professional plan. It is one of the earliest cloud storage services. 

2. Backblaze B2 :
Backblaze B2 is a cloud storage service which is provided by Backblaze Incorporation. It is quite similar to the Amazon S3 and other cloud storage services. It is an object storage service. It was launched by Backblaze Incorporation in 2015. It offers 10 GB free storage space. Maximum file size is 5GB. It also provides unlimited storage space for premium accounts. It is also known as B2 cloud storage. 

Difference between Dropbox and Backblaze B2 :

DROPBOX	BACKBLAZE B2
It is owned by Dropbox Incorporation.	It is owned by Backblaze Incorporation.
It was launched in 2007.	It was launched in 2015.
It was developed by Drew Houston and Arash Ferdowsi.	It was developed by Backblaze Incorporation.
It offers 2 GB free storage space.	It offers 10 GB free storage space, unlimited free uploads, and 1 GB of free downloads each day.
Maximum storage size is 5 TB here.	It provides unlimited storage space for paid.
It supports less types of file formats.	It supports more types of file formats.
Files are encrypted at servers.	Files are not locally encrypted.
It supports file versioning.	It also supports file versioning.
It shares files through web applications.	While it shares files through links.
It charges comparatively more for additional storage that means it is more costly.	It charges less for additional storage that means it is less costly.
It uses block-syncing to update changes quickly.	It does not use block-syncing to update changes quickly.
It provides full security of data.	It provides more security of data than Dropbox.