eFile™ is a FREE file manager and launcher for the BlackBerry platform.
efile 功能强大的资源管理器，拥有类似于windows资源管理器的全部功能，查看BB里各文件夹的东西，但遗憾的是对中文的支持不是很好，经常出现乱码。
原版介绍：
eFile™ provides a robust and flexible UI framework allowing users to manage their files of different type stored on their handheld and the corporate network.
Users can create folders, rename files and move them between directories.
File type associations allow immediate application launch from eFile™. Applications can be added to cascading menu and to the launch bar.
Developers can use the free eFile API to make their applications eFile-enabled. Using this API developers introduce uniform UI components for file operations to their applications and enable their users to store everything in one place. Finally, application launch by simply selecting a file becomes possible for applications that register their file types with eFile™ through its API. Contact support@DynoPlex.com to if you're interested in the free eFile API
