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.腾讯微云：
腾讯微云是腾讯控股有限公司提供的文件托管服务和云存储服务。它有英文和中文两种语言版本。它主要用于中国等国家。它由腾讯控股有限公司于 2012 年推出。它提供 10 GB 的免费存储空间。它为付费用户提供有限的存储空间。此处的最大存储大小为 2 TB。
SugarSync与腾讯微云的区别：
| SUGARSYNC | TENCENT WEIYUN |
|---|---|
| It is owned by J2 Global. | It is owned by Tencent Holdings Limited. |
| It was launched in 2009. | It was launched in 2012. |
| It was developed by J2 Global. | It was developed by Tencent. |
| It does not offer free storage space. | It offers 10 GB free storage space. |
| It provides limited as well as unlimited maximum storage space for paid. | It also provides limited maximum storage space for paid. |
| It is used across the world. | While it is used only in China. |
| Maximum storage size is 60 GB for personal paid and unlimited for professional paid. | Maximum storage size is 2 TB here. |
| Maximum file size is not restricted here. | Here maximum file size is 1 GB for regular upload and 32 GB for power upload. |
| It supports file versioning. | It does not support file versioning. |
| It supports developer API. | It does not support developer API. |
| It has traffic or band-width limit of 10 GB per day for free and 250 GB per day for paid. | It has no traffic or band-width limit. |