1. 保管箱：
Dropbox 是美国公司 Dropbox Incorporation 提供的文件托管服务。它提供云存储、文件同步、个人云和客户端软件。它成立于 2007 年。 Dropbox 是由两位麻省理工学院的学生Drew Houston和Arash Ferdowsi 开发的。它仅提供 2 GB 的免费存储空间。它是最早的云存储服务之一。
2. 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。
Dropbox 和 iCloud 的区别：
| DROPBOX | iCLOUD |
|---|---|
| It is owned by Dropbox Incorporation. | It is owned by Apple Incorporation. |
| It was launched in 2007. | It was launched in 2011. |
| It was developed by Drew Houston and Arash Ferdowsi. | It was developed by Apple. |
| It offers 2 GB free storage space. | It offers 5 GB free storage space. |
| It charges comparatively more for additional storage that means it is more costly. | It charges less for additional storage that means it is less costly. |
| The number of users using Dropbox is less. | The number of users using iCloud is more. |
| It shares files through web applications. | While it shares files through links. |
| Maximum file size can be 10 GB. | While here maximum file size can be only 50 GB. |
| It limits 20 GB per day free and 200 GB per day paid. | While her is traffic or band-width limit of 200, 400 or 600 per month. |
| It uses block-syncing to update changes quickly. | While it does not use block-syncing. |
| It has the referral program for gaining additional storage. | While it does not have any referral program. |