1.兆丰：
Mega是Mega Limited提供的文件托管服务和云存储。它基本上是为基于Web的应用程序而设计的，但它也为Android，Windows Phone和iPhone提供了移动应用程序。它由Kim Dotcom于2013年推出。它是使用C++，JavaScript， Java和Objective-C开发的。它提供15 GB的免费存储空间，另外还有35 GB的免费试用版。
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。
Mega和Tresorit之间的区别：
| MEGA | TRESORIT |
|---|---|
| It is owned by Mega Limited. | It is owned by Tresorit. |
| It was launched in 2013. | It was launched in 2014. |
| It was developed by Kim Dotcom. | It was developed by Tresorit. |
| It offers 15 GB free storage space with additional 35 GB for free trial. | It offers 3 GB free storage space. |
| Maximum storage size is 16 TB here. | Maximum storage size is 1000 GB here. |
| It supports developer API. | It does not support developer API. |
| It is supported by Windows, macOS, Linux, iOS, Android, Windows Phone and Blackberry operating sytems. | It is supported by Windows, macOS, iOS, Android, Windows Phone and Linux. |
| Maximum file size is equal to available cloud drive space. | Here maximum file size is 500 MB for free, 5 GB for premium and 10 GB for rest of paid plans. |
| It has traffic or band-width limit of 10 GB free and up to 96 TB per month for paid. | It has no traffic or band-width limit. |
| It supports file versioning. | It supports file versioning for paid plans only. |