eFile is a part of eOffice. See http://www.dynoplex.com/eoffice.shtml for more details.
eFile™ allows you to organize your files in a Windows-like environment on BlackBerry®
Manage files of different types stored either directly on the BlackBerry® or on a corporate network. Users can create folders, rename files and move them between directories in a one-step synchronization process using eFile™ Desktop manager. File type associations allow for immediate application launch from eFile™. Additionally, applications can be added to a cascading menu and to the launch bar.
eOffice can view document attachments and files of all the common extensions such as PDF, PPT, DOC, XLS, CSV in their original quality, use zoom option to see every detail and store them on your Blackberry flash memory or memory card.