1. SugarSync：
SugarSync是由J2 Global提供的云服务和文件同步服务。它可以主动同步计算机系统和其他设备中的文件，以进行备份，访问和共享。 Windows，macOS，iOS和Android操作系统均支持它。它由J2 Global在2009年推出。它不提供免费的存储空间。它提供付费的有限和无限存储空间。
2. ZumoDrive：
ZumoDrive是文件托管服务，文件同步服务和基于云的文件存储服务，最初由Zecter Incorporation提供，但后来由Motorola Mobility拥有。它由Zecter Inc.开发。适用于Windows，macOS，iOS，webOS，Linux和Android。它提供了2 GB的免费存储空间，可以扩展到500 GB的付费存储空间。它于2009年推出。
SugarSync和ZumoDrive之间的区别：
| SUGARSYNC | ZUMODRIVE |
|---|---|
| It is owned by J2 Global. | Originally owned by Zecter Incorporation but was later owned by Motorola Mobility. |
| It was launched in 2009. | It was also launched in 2009. |
| It does not offer free storage space. | It offered 2 GB free storage space. |
| It was developed by J2 Global. | It was developed by Zecter Inc. |
| Maximum storage size is 60 GB for personal paid and unlimited for professional paid. | Maximum storage size offered was 500 GB here. |
| 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 is still in use. | This service was suspended in 2012. |
| It does not provide intelligent predictive caching. | It provided intelligent predictive caching. |
| It supports Windows, OS X, Android, BlackBerry, iOS and Windows Phone. | It supported Windows, OS X, Linux, Android, iOS and Palm webOS. |
| It does not have freeware version. | It had freeware version. |