Difference between Backblaze B2 and Ubuntu One

1. 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. It also provides unlimited storage space for premium accounts. It is also known as B2 cloud storage. 

2. Ubuntu One :
Ubuntu One was a file hosting service, file synchronization service and cloud service which was provided by Canonical Limited. It was an OpenID based single sign-on service. It provided services for storing files on cloud and also streaming of music from cloud. It was developed by Canonical Ltd. It was suitable for Windows, OS X, iOS, Ubuntu and Android. It offered 5 GB free storage space. It was launched in 2009. 

Difference between Backblaze B2 and Ubuntu One :

BACKBLAZE B2	UBUNTU ONE
It is owned by Backblaze Incorporation.	It was owned by Canonical Limited.
It was launched in 2015.	It was launched in 2009.
It offers 10 GB free storage space, unlimited free uploads, and 1 GB of free downloads each day.	It offered 5 GB free storage space.
It was developed by Backblaze Inc.	It was developed by Canonical Ltd.
It has the unlimited maximum storage size.	Maximum storage size was unlimited here also.
It is still in use.	This service was suspended in 2014.
Files stored here are not locally encrypted.	Files stored in Ubuntu One were not encrypted.
Maximum file size has no limit.	Maximum file size was 5 GB per file.
It is a file hosting and cloud storage service.	It was a commercial file synchronization service.
It has no traffic or band-width limit.	It has Amazon S3 limits as traffic or band-width limit.
It provides more security of data.	It provided comparatively less security of data.