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. CloudMe：
CloudMe是CloudMe AB提供的文件存储服务。它提供文件同步，云存储和客户端软件。它由Daniel Arthursson于2011年创立。最初它的名称为iCloud，但后来苹果公司获得了该名称。它提供3 GB的免费存储空间。它为高级帐户提供了有限的存储空间。它最大的竞争对手是Dropbox。
Amazon S3和CloudMe之间的区别：
| AMAZON S3 | CLOUDME |
|---|---|
| It is owned by Amazon. | It is owned by CloudMe AB. |
| It was launched in 2006. | It was launched in 2011. |
| It was developed by Amazon Web Services (AWS). | It was developed by Daniel Arthursson. |
| It does not offer free storage space. | It offers 3 GB free storage space. |
| It provides unlimited storage space for paid. | Maximum storage size is 500 GB for paid here. |
| It supports file versioning. | It also supports file versioning but rarely. |
| It does not support remote uploading. | It also does not support remote uploading. |
| Maximum file size in Amazon S3 is 5 GB. | Here maximum file size is 150 MB for free and unlimited for premium accounts. |
| It requires credit-card details for free trial. | It does not require credit-card detail for free services. |