1.糖同步：
SugarSync 是 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。它受 Windows、macOS、iOS 和 Android 操作系统支持。它由 J2 Global 于 2009 年推出。它不提供免费存储空间。它为付费用户提供有限和无限的存储空间。
2.共享文件：
ShareFile 是 Citrix Systems 提供的文件同步服务、文件共享服务和基于云的文件存储服务。它是一种安全的内容协作，支持以文档为中心的任务。它提供基于云的存储、虚拟数据室和客户门户。它是由Jesse Lipson开发的。它适用于 Windows、macOS、iOS 和 Android。它不提供免费存储空间。它于2005年推出。
SugarSync 和 ShareFile 的区别：
| SUGARSYNC | SHAREFILE |
|---|---|
| It is owned by J2 Global. | It is owned by Citrix Systems. |
| It was launched in 2009. | It was launched in 2005. |
| It does not offer free storage space. | It offers 30 days free trial with maximum storage size 10 GB. |
| It was developed by J2 Global. | It was developed by Jesse Lipson. |
| Maximum storage size is 60 GB for personal paid and unlimited for professional paid. | Maximum storage size is unlimited here. |
| It is a file hosting, file synchronization and cloud storage service. | It is a commercial file sharing and file synchronization service. |
| Maximum file size has no limit here. | Maximum file size is 10 GB to 100 GB according to plans. |
| Detect rename and detect move features are available in it. | It has detect rename feature. |
| It is supported by Windows, OS X, Android, BlackBerry, iOS and Windows Phone. | It is supported by Windows, OS X, Android and iOS. |
| It does not have freeware version. | It has freeware version. |