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. 云：
pCloud 是 pCloud AG 提供的文件共享和云存储服务。它是一种安全的云存储服务。它还提供文件共享服务，有助于与其他用户共享文件。它没有文件大小的限制。它由 pCloud AG 开发。它提供 10 GB 的免费存储空间。它为付费用户提供有限的最大存储空间。它于2013年推出。
Zetta 和 pCloud 的区别：
| ZETTA | PCLOUD |
|---|---|
| It is owned by Zetta Incorporation. | It is owned by pCloud AG. |
| It was launched in 2008. | It was launched in 2013. |
| It was developed by Jeff Whitehead, Lou Montulli and Jason Harrison. | It was developed by pCloud AG. |
| It doe not offer free storage space. | It offers 10 GB free storage space. |
| It is a commercial file synchronization service. | It is a file sharing service. |
| It does not support file versioning. | It supports file versioning. |
| It is used by small and medium sized enterprises. | It is used by all sized enterprises. |
| It does not provide service for personal data and is used for professional work only. | It provides storage service for personal data too. |
| It does not have client-side encryption. | It has client-side encryption. |