1.Yandex 磁盘：
Yandex Disk 是 Yandex 提供的云存储、文件同步和文件共享服务。它允许用户将文件存储在云上，并允许与他人在线共享文件。它由 Yandex 于 2012 年推出。它提供 10 GB 的免费存储空间。它为付费提供了有限的最大存储空间。 Yandex Disk 提供的最大存储空间为 1024 GB。
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。
Yandex Disk 和 Ubuntu One 的区别：
| YANDEX DISK | UBUNTU ONE |
|---|---|
| It is owned by Yandex. | It was owned by Canonical Limited. |
| It was launched in 2012. | It was launched in 2009. |
| It offers 10 GB free storage space. | It offered 5 GB free storage space. |
| It was developed by Yandex. | It was developed by Canonical Ltd. |
| Maximum storage size is 1024 GB here. | Maximum storage size was unlimited here. |
| It is still in use. | This service was suspended in 2014. |
| Files stored here are encrypted. | Files stored in Ubuntu One were not encrypted. |
| Maximum file size is 2 GB upload via Web and 50 GB upload via application. | 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 traffic or band-width limit of 200% of storage size per day. | It has Amazon S3 limits as traffic or band-width limit. |