1. OneDrive：
OneDrive 或 Microsoft OneDrive 是 Microsoft 提供的文件托管和同步服务。它为用户存储文件、个人数据和共享文件提供了便利。它提供 5 GB 的免费存储空间。它由微软于 2007 年推出，主要供专业工作者使用，用于存储可能需要更高安全性的工作相关数据。
2. 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。 OneDrive 和 SugarSync 的区别：
| ONEDRIVE | SUGARSYNC |
|---|---|
| It is owned and developed by Microsoft Incorporation. | It is owned and developed by J2 Global. |
| It was launched in 2007. | It was launched in 2009. |
| It offers 5 GB free storage space. | It does not offer free storage space. |
| It provides limited maximum storage space for paid. | It provides limited as well as unlimited maximum storage space for paid. |
| It supports remote uploading. | It does not support remote uploading. |
| Maximum storage size is 5 TB here. | Maximum storage size is 60 GB for personal paid and unlimited for professional paid. |
| Maximum file size is 100 GB here. | Here maximum file size is not restricted. |
| It supports file versioning in office files only. | It fully supports file versioning. |
| It has no traffic or band-width limit. | It has traffic or band-width limit of 10 GB per day for free and 250 GB per day for paid. |
| It is mostly used by professionals. | It is used for personal as well as professional work. |