1.捷达：
Zetta是Zetta Incorporation提供的文件同步服务和基于云的备份存储服务。它是由Jeff Whitehead ， Lou Montulli和Jason Harrison开发的。它主要用于中小型企业和企业。它不提供免费版本。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. RapidShare：
RapidShare是RapidShare AG提供的文件托管服务，云存储服务和在线备份服务。它具有同时处理大量用户的能力。它有多种语言版本，例如英语，法语，德语和西班牙语。它是由Christian Schmid开发的。它最初名为ezShare。它是最早的云存储服务之一。它于2002年推出。
Zetta和RapidShare之间的区别：
| ZETTA | RAPIDSHARE |
|---|---|
| It is owned by Zetta Incorporation. | It was owned by RapidShare AG. |
| It was launched in 2008. | It was launched in 2002. |
| It was developed by Jeff Whitehead, Lou Montulli and Jason Harrison. | It was developed by Christian Schmid. |
| It is a commercial file synchronization service. | It was a file hosting service. |
| It does not offer free storage space. | It offered free storage space. |
| It is still in use. | This service was suspended in 2015. |
| Files can be downloaded multiple times. | Files could be downloaded only 10 times in free account. |
| Links do not expire after inactivity of some days. | While here, links expired after inactivity of 60 days. |
| It is used by small and medium sized enterprises. | It was used by all sized enterprises. |
| It does not provide service for personal data and is used for professional work only. | It provided storage service for personal data too. |