1.亚马逊云端硬盘：
Amazon Drive是Amazon提供的文件托管服务和云存储。它允许云存储，文件托管，文件共享和文件备份。可以从台式机，移动设备和平板电脑等多种设备上传输此驱动器上的文件和文件夹。 Amazon Drive最初被称为Amazon Cloud Drive。它在世界范围内不可用。它在某些选定的国家/地区可用。它于2011年推出。
2. 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。
Amazon Drive和Tresorit之间的区别：
| AMAZON DRIVE | TRESORIT |
|---|---|
| It is owned by Amazon. | It is owned by Tresorit. |
| It was launched in 2011. | It was launched in 2014. |
| It was developed by Amazon. | It was developed by Tresorit. |
| It offers 5 GB free storage space. | It offers 3 GB free storage space. |
| It is used in all countries excluding Mexico and China. | While it is used world wide. |
| It has the maximum storage size of 30 TB. | Maximum storage size is 1000 GB here. |
| There is no way to control permission to the invite link of file or folder. | It gives access to control the permission to the invite link of file or folder. |
| It does not have client-side encryption. | It has client-side encryption. |
| It does not support file versioning. | It supports file versioning for paid plans only. |
| It has Amazon S3 limit as traffic or band-width limit. | It has no traffic or band-width limit. |
| It supports developer API. | It does not support developer API. |
| Maximum file size in Amazon Drive is 2 GB via Web and 50 GB via Drive application. | Here maximum file size is 500 MB for free, 5 GB for premium and 10 GB for rest of paid plans. |