1. 云：
iCloud 是苹果公司提供的云存储和云计算服务。它允许用户将文档、照片和音乐等数据存储在远程服务器上，以便下载到 iOS、macOS 或 Windows 设备。它还能够与其他用户共享和发送数据。如果 Apple 设备丢失或被盗，管理它也很有帮助。它于2011年推出。
2.快速分享：
RapidShare 是由 RapidShare AG 提供的文件托管服务、云存储服务和在线备份服务。它有能力同时处理大量用户。它有多种语言版本，如英语、法语、德语和西班牙语。它是由Christian Schmid开发的。它最初被命名为ezShare。它是最早的云存储服务之一。它于2002年推出。
iCloud 和 RapidShare 的区别：
| ICLOUD | RAPIDSHARE |
|---|---|
| It is owned by Apple Incorporation. | It was owned by RapidShare AG. |
| It was launched in 2011. | It was launched in 2002. |
| It was developed by Apple Inc. | It was developed by Christian Schmid. |
| It offers 5 GB free storage space and 2 TB maximum storage space for paid. | It offered limited storage space for both free and paid accounts. |
| It is a file hosting and cloud storage service. | It was a file hosting and online backup service. |
| Maximum file size is 50 GB here. | Maximum file size was 500 MB per file. |
| Links are not expired after inactivity of some days. | While here, links expired after inactivity of 60 days. |
| It is generally designed for macOS and iOS operating system. | It was designed for all operating systems. |
| It is still in use. | This service was suspended in 2015. |
| It has traffic or band-width limit of 200 GB or 400 GB or 600 GB per month. | It had variable traffic or band-width limit according to paid plans. |
| Files can be downloaded multiple times. | Files could be downloaded only 10 times in free account. |