1.泽塔：
Zetta 是由 Zetta Incorporation 提供的文件同步服务和基于云的备份存储服务。它由Jeff Whitehead 、 Lou Montulli和Jason Harrison 开发。它主要用于中小型企业和企业。它不提供免费软件版本。它主要用于存储专业数据而不是个人数据。它于2008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。
Zetta 和 ZumoDrive 的区别：
| ZETTA | ZUMODRIVE |
|---|---|
| It is owned by Zetta Incorporation. | Originally owned by Zecter Incorporation but was later owned by Motorola Mobility. |
| It was launched in 2008. | It was launched in 2009. |
| It does not offer freeware service. | It offered 2 GB free storage space. |
| It was developed by Jeff Whitehead, Lou Montulli and Jason Harrison. | It was developed by Zecter Inc. |
| It is supported by Windows, OS X and Linus. | It was supported by Windows, OS X, Linux, Android, iOS and Palm webOS. |
| It is a file hosting, file synchronization and cloud-based backup service. | It is a file hosting, file synchronization and cloud-based file storage service. |
| It is till in use. | This service was suspended in 2012. |
| It does not provide intelligent predictive caching. | It provided intelligent predictive caching. |
| It does not have freeware version. | It had freeware version. |