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。
2.兆丰：
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。
Amazon Drive和Mega之间的区别：
| AMAZON DRIVE | MEGA |
|---|---|
| It is owned by Amazon. | It is owned by Mega Limited. |
| It was launched in 2011. | It was launched in 2013. |
| It was developed by Amazon. | It was developed by Kim Dotcom. |
| It offers 5 GB free storage space. | It offers 15 GB free storage space with additional 35 GB for free trial. |
| It provides limited storage space for paid. | It also provides limited storage space for paid. |
| 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 16 TB here. |
| It does not provide applications for all operating systems and web based systems. | It provides applications for all operating systems and web based systems. |
| It does not support file versioning. | It supports file versioning. |
| 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 has Amazon S3 limit as traffic or band-width limit. | It has traffic or band-width limit of 10 GB free and up to 96 TB per month for paid. |
| Maximum file size in Amazon Drive is 2 GB via Web and 50 GB via Drive application. | Here maximum file size is equal to available cloud drive space. |