1. 保管箱：
Dropbox 是美国公司 Dropbox Incorporation 提供的文件托管服务。它提供云存储、文件同步、个人云和客户端软件。它成立于 2007 年。 Dropbox 是由两位麻省理工学院的学生Drew Houston和Arash Ferdowsi 开发的。它仅提供 2 GB 的免费存储空间。它是最早的云存储服务之一。
2. 超级：
Mega 是由 Mega Limited 提供的文件托管服务和云存储。它基本上是为基于 Web 的应用程序设计的，但它也为 Android、Windows Phone 和 iPhone 提供移动应用程序。它由Kim Dotcom于 2013 年推出。它使用 C++、JavaScript、 Java和 Objective-C 开发。它提供 15 GB 免费存储空间，另外还有 35 GB 免费试用。
Dropbox 和 Mega 的区别：
| DROPBOX | MEGA |
|---|---|
| It is owned by Dropbox Incorporation. | It is owned by Mega Limited. |
| It was launched in 2007. | It was launched in 2013. |
| It was developed by Drew Houston and Arash Ferdowsi. | It was developed by Kim Dotcom. |
| It offers 2 GB free storage space. | It offers 15 GB free storage space with additional 35 GB for free trial. |
| It provides unlimited maximum storage space for paid. | It provides limited storage space for paid. |
| It does not provide applications for all operating systems and web based systems. | It provides applications for all operating systems and web based systems. |
| Maximum storage size is unlimited here. | Here maximum storage size is 16 TB. |
| Maximum file size is 10 GB and unlimited using client application. | Here maximum file size is equal to available cloud drive space. |
| It does not fully support file versioning. | It fully supports file versioning. |
| It supports less types of file formats. | It supports more types of file formats. |
| It has traffic or band-width limit of 20 GB per day for free and 200 GB per day for paid. | It has traffic or band-width limit of 10 GB free and up to 96 TB per month for paid. |
| It provides additional 500 MB free storage space for referrals up to 18 GB paid. | There is no referral system here for gaining free storage space. |
| It shares files through web applications. | While it shares files through links. |
| It uses block-syncing to update changes quickly. | It does not use block-syncing to update changes quickly. |