1. Tresorit：
Tresorit是Tresorit提供的一种云存储，文件同步和文件共享服务。它是可用的最安全的云计算服务之一。它提供了端到端的加密文件同步和文件共享服务。它由Tresorit于2014年推出。它提供3 GB的免费存储空间。 Windows，macOS，iOS，Android，Windows Phone和Linux支持该功能。
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。
Tresorit和Ubuntu One之间的区别：
| TRESORIT | UBUNTU ONE |
|---|---|
| It is owned by Tresorit. | It was owned by Canonical Limited. |
| It was launched in 2014. | It was launched in 2009. |
| It offers 3 GB free storage space. | It offered 5 GB free storage space. |
| It was developed by Tresorit. | It was developed by Canonical Ltd. |
| Maximum storage size is 1000 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 500 MB for free, 5 GB for premium and 10 GB for rest of paid plans. | 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 client-side encryption. | It did not have client-side encryption. |
| It has no traffic or band-width limit. | It has Amazon S3 limits as traffic or band-width limit. |