1.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。
2.乌拉：
Wuala 是最初由 Caleido Incorporation 提供但后来归希捷科技所有的文件同步服务、文件存储服务、文件版本控制服务和备份存储服务。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。
腾讯微云和Wuala的区别：
| TENCENT WEIYUN | WUALA |
|---|---|
| It is owned by Tencent Holdings Limited. | Originally owned by Caleido Incorporation but was later owned by Seagate Technology. |
| It was launched in 2012. | It was launched in 2008. |
| It offers 10 GB free storage space. | It offered 5 GB free storage space but later on it was made only paid-service. |
| It was developed by Tencent. | It was developed by Dominik Grolimund and Luzius Meisserin. |
| It does not provide additional free storage space for referral. | Initially it had referral system but later on referral service was suspended. |
| It does not support file versioning. | It supported file versioning. |
| It does not provide ability to trade local disk storage space. | It provided ability to trade local disk storage space against cloud storage. |
| It is still in use. | This service was suspended in 2015. |
| It is majorly used in China. | It was used world wide. |