Difference between Dropbox and Amazon S3

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 of free storage space. It is one of the earliest cloud storage services. 

Amazon S3 stands for Amazon Simple Storage Service. It is a cloud storage service that is provided by Amazon Web Services. It provides object storage through a web service interface. It allows to store any type of object like data lakes for analytics, data archives, backup and recovery, disaster recovery, hybrid cloud storage, and internet applications. It was launched by AWS in 2006. 

Differences between Dropbox and Amazon S3 are as follows:

DROPBOX	AMAZON S3
It is owned by Dropbox Incorporation.	It is owned by Amazon.
It was launched in 2007.	It was launched in 2006.
It offers 2 GB of free storage space.	It offers 5 GB free storage space.
It was developed by Drew Houston and Arash Ferdowsi.	It was developed by Amazon Web Services (AWS).
It supports less types of file formats.	It supports more types of file formats.
It shares files through web applications.	While it shares files through links.
It uses block-syncing to update changes quickly.	It does not use block-syncing to update changes quickly.
It provides 2 GB maximum storage space for free and 5 TB storage space for paid.	It also has an unlimited maximum storage size for paid users.
Maximum file size in Dropbox is 100 GB.	Here maximum file size is 5 TB.
It does not require credit card for free services.	It requires credit-card details for a free trial.