1. 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。
2.共享文件：
ShareFile 是 Citrix Systems 提供的文件同步服务、文件共享服务和基于云的文件存储服务。它是一种安全的内容协作，支持以文档为中心的任务。它提供基于云的存储、虚拟数据室和客户门户。它是由Jesse Lipson开发的。它适用于 Windows、macOS、iOS 和 Android。它不提供免费存储空间。它于2005年推出。
Ubuntu One 和 ShareFile 的区别：
| UBUNTU ONE | SHAREFILE |
|---|---|
| It was owned by Canonical Limited. | It is owned by Citrix Systems. |
| It was launched in 2009. | It was launched in 2005. |
| It offered 5 GB free storage space. | It offers 30 days free trial with maximum storage size 10 GB. |
| It was developed by Canonical Ltd. | It was developed by Jesse Lipson. |
| It had the unlimited maximum storage size. | Maximum storage size is unlimited here also. |
| It was a file hosting and commercial file synchronization service. | It is a commercial file sharing and file synchronization service. |
| Maximum file size was 5 GB per file. | Maximum file size is 10 GB to 100 GB according to plans. |
| This service was suspended in 2014. | It is still in use. |
| It was supported by Windows, OS X, Ubuntu, iOS and Android. | It is supported by Windows, OS X, Android and iOS. |