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. Wuala：
Wuala是文件同步服务，文件存储服务，文件版本控制服务和备份存储服务，最初由Caleido Incorporation提供，但后来由Seagate Technology拥有。它由Dominik Grolimund和Luzius Meisserin开发。它主要是使用Java开发的。它提供了5 GB的免费存储空间。它于2008年推出。
Amazon Drive和Wuala之间的区别：
| AMAZON DRIVE | WUALA |
|---|---|
| It is owned by Amazon. | Originally owned by Caleido Incorporation but was later owned by Seagate Technology. |
| It was launched in 2011. | It was launched in 2008. |
| It offers 5 GB free storage space. | It offered 5 GB free storage space but later on it was made only paid-service. |
| It was developed by Amazon. | It was developed by Dominik Grolimund and Luzius Meisserin. |
| It does not have referral system for gaining additional free storage space. | Initially it had referral system but later on referral service was suspended. |
| It has the maximum storage size of 30 TB. | Maximum storage size offered was 2 TB. |
| It does not support file versioning. | It supported file versioning. |
| It does not provide ability to trade local disk storage space. | It provided ability to trade local disk storage space against cloud storage. |
| It is used in all countries excluding Mexico and China. | While it was used world wide. |
| It is still in use. | This service was suspended in 2015. |