iLax is a File Manager. You also can create a Playlist for YouTube videos and stream (only online) these videos.

Document Manger supports PDF, MS Office, iWorks and the most common file types.

Document Manager Pro Features:
- Built-in viewer supports PDF, MS Office (Word, Excel and Powerpoint) and Apple iWork (Keynote, Pages and Numbers) files, HTML, RTF, TXT, PNG, JPG, GIF etc
- Zip and unzip files
- Create folders and sub folders
- Move files from one folder to another
- Send your files to / Open your files in other apps, e.g. pages, numbers, etc.
- Save files from emails using the open in feature
- TV / VGA out
- Print documents from Document Manager on iOS 4.2 or later
- Email files to Your Colleagues or Friends directly from Document Manager Pro
- Transfer files to iPhone, iPod or iPad
- Zoom PDFs and other documents
- Convert documents ( MS Office, iWorks and the most common file types) to PDF
- Build in web browser: Convert web pages to PDFs for offline reading on the iPhone or iPad
- Convert maps to PDF

Supported video formats:
mov, mp4, avi, wmv, mpeg, mpeg1, mpeg2, mpeg4, rmvb, flv, f4v, mkv, dat, vob, mts, ogg, mpg, wma

File transfer
Use iTunes file sharing to transfer files directly to your device via USB cable. Access, view documents and upload from/to box and Dropbox