1. Backblaze B2 :
Backblaze B2 是由 Backblaze Incorporation 提供的云存储服务。它与 Amazon S3 和其他云存储服务非常相似。它是一种对象存储服务。它由 Backblaze Incorporation 于 2015 年推出。它提供 10 GB 的免费存储空间。它还为高级帐户提供无限的存储空间。它也被称为 B2 云存储。
2. Ubuntu 一：
Ubuntu One 是由 Canonical Limited 提供的文件托管服务、文件同步服务和云服务。这是一个基于 OpenID 的单点登录服务。它提供了在云上存储文件以及从云中传输音乐的服务。它由 Canonical Ltd 开发，适用于 Windows、OS X、iOS、Ubuntu 和 Android。它提供了 5 GB 的免费存储空间。它于2009年推出。
Backblaze B2 和 Ubuntu One 的区别：
| 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. | 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. |