1. Google云端硬盘：
Google云端硬盘是Google提供的文件存储和同步服务。它允许用户存储文件和个人数据以及共享文件。它提供15 GB的可用存储空间。它由Google在2012年推出。几乎与互联网相关的每个人都在使用它。每个人都用它来存储一些专业和个人数据。
2. Ubuntu One：
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。它提供了用于在云上存储文件以及从云流式传输音乐的服务。它由Canonical Ltd.开发。适用于Windows，OS X，iOS，Ubuntu和Android。它提供了5 GB的可用存储空间。它于2009年推出。
Google Drive和Ubuntu One之间的区别：
| GOOGLE DRIVE | UBUNTU ONE |
|---|---|
| It is owned by Google LLC. | It was owned by Canonical Limited. |
| It was launched in 2012. | It was launched in 2009. |
| It offers 15 GB free storage space. | It offered 5 GB free storage space. |
| It was developed by Google. | It was developed by Canonical Ltd. |
| It has the maximum storage size of 30 TB. | 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 5 TB here. | 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 supports Windows, OS X, Linux, iOS and Android. | It supported Windows, OS X, iOS, Ubuntu and Android. |
| It has more number of users. | It had comparatively less number of users. |