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. ZumoDrive：
ZumoDrive 是一种文件托管服务、文件同步服务和基于云的文件存储服务，最初由 Zecter Incorporation 提供，但后来归摩托罗拉移动所有。它由 Zecter Inc. 开发，适用于 Windows、macOS、iOS、webOS、Linux 和 Android。它提供 2 GB 免费存储空间，付费可扩展至 500 GB。它于2009年推出。
iCloud 和 ZumoDrive 的区别：
| ICLOUD | ZUMODRIVE |
|---|---|
| It is owned by Apple Incorporation. | Originally owned by Zecter Incorporation but was later owned by Motorola Mobility. |
| It was launched in 2011. | It was launched in 2009. |
| It offers 5 GB free storage space. | It offered 2 GB free storage space. |
| It was developed by Apple. | It was developed by Zecter Inc. |
| It has the maximum storage size of 2 TB. | Maximum storage size offered was 500 GB here. |
| It is a file hosting and cloud storage service. | It is a file hosting, file synchronization and cloud-based file storage service. |
| It is still in use. | This service was suspended in 2012. |
| Maximum file size is 50 GB here. | maximum file had no limit here. |
| It does not provide intelligent predictive caching. | It provided intelligent predictive caching. |
| It is generally designed for macOS and iOS. | It supported Windows, OS X, Linux, Android, iOS and Palm webOS. |