1.乌拉：
Wuala 是一种文件同步服务、文件存储服务、文件版本控制服务和备份存储服务，最初由 Caleido Incorporation 提供，但后来归希捷科技所有。它是由Dominik Grolimund和Luzius Meisserin 开发的。它主要是使用Java开发的。它提供了 5 GB 的免费存储空间。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。
Wuala 和 ZumoDrive 的区别：
| WUALA | ZUMODRIVE |
|---|---|
| Originally owned by Caleido Incorporation but was later owned by Seagate Technology. | Originally owned by Zecter Incorporation but was later owned by Motorola Mobility. |
| It was launched in 2008. | It was launched in 2009. |
| It offered 5 GB free storage space but later on it was made only paid-service. | It offered 2 GB free storage space. |
| It was developed by Dominik Grolimund and Luzius Meisserin. | It was developed by Zecter Inc. |
| It was supported by Windows, OS X, Debian, Ubuntu, Android and iOS. | It was supported by Windows, OS X, Linux, Android, iOS and Palm webOS. |
| It is a file hosting, file synchronization and cloud storage service. | It is a file hosting, file synchronization and cloud-based file storage service. |
| It was suspended in 2015. | This service was suspended in 2012. |
| It did not provide intelligent predictive caching. | It provided intelligent predictive caching. |
| It provided file versioning. | It did not provide file versioning. |