1.亚马逊S3：
Amazon S3代表Amazon Simple Storage Service。它是Amazon Web Services提供的一种云存储服务。它通过Web服务界面提供对象存储。它允许存储任何类型的对象，例如用于分析，数据存档，备份和恢复，灾难恢复，混合云存储和Internet应用程序的数据湖。它由AWS在2006年推出。
2. RapidShare：
RapidShare是RapidShare AG提供的文件托管服务，云存储服务和在线备份服务。它具有同时处理大量用户的能力。它有多种语言版本，例如英语，法语，德语和西班牙语。它是由Christian Schmid开发的。它最初名为ezShare。它是最早的云存储服务之一。它于2002年推出。
Amazon S3和RapidShare之间的区别：
| AMAZON S3 | RAPIDSHARE |
|---|---|
| It is owned by Amazon. | It was owned by RapidShare AG. |
| It was launched in 2006. | It was launched in 2002. |
| It was developed by Amazon Web Services (AWS). | It was developed by Christian Schmid. |
| It does not offer free storage space. | It offered free storage space. |
| It provides unlimited maximum storage space. | It used to provide limited maximum storage space. |
| Files can be downloaded unlimited times. | Files could be downloaded only 10 times in free account. |
| Maximum file size is 5 GB per file. | Maximum file size was 500 MB per file. |
| It is a file hosting and cloud storage service. | It was a file hosting and online backup service. |
| Links are not expired after inactivity of some days. | RapidShare links expired after inactivity of 60 days. |
| It is still in use. | This service was suspended in 2015. |
| It has Amazon S3 limit as traffic or band-width limit. | It had variable traffic or band-width limit according to paid plans. |
| It requires credit-card details for free trial. | It did not require credit-card detail for free accounts. |