1.亚马逊S3：
Amazon S3 代表 Amazon Simple Storage Service。它是由 Amazon Web Services 提供的云存储服务。它通过 Web 服务接口提供对象存储。它允许存储任何类型的对象，例如用于分析、数据归档、备份和恢复、灾难恢复、混合云存储和互联网应用程序的数据湖。它由 AWS 于 2006 年推出。
2. 特雷索里特：
Tresorit 是 Tresorit 提供的云存储、文件同步和文件共享服务。它是最安全的云计算服务之一。它提供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。它支持 Windows、macOS、iOS、Android、Windows Phone 和 Linux。
Amazon S3 和 Tresorit 的区别：
| AMAZON S3 | TRESORIT |
|---|---|
| It is owned by Amazon. | It is owned by Tresorit. |
| It was launched in 2006. | It was launched in 2014. |
| It was developed by Amazon Web Services (AWS). | It was developed by Tresorit. |
| It does not offer free storage space. | It offers 3 GB free storage space. |
| It provides unlimited maximum storage space for paid. | It provides limited maximum storage space for paid. |
| It has the unlimited maximum storage size. | Maximum storage size is 1000 GB here. |
| It requires credit-card details for free trials. | It does not require credit-card details for free trials. |
| It does not have client-side encryption. | It has client-side encryption. |
| It supports 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 is 5 GB here. | Here maximum file size is 500 MB for free, 5 GB for premium and 10 GB for rest of paid plans. |