ReaddleDocs is the Rolls Royce of document portfolios. Lots of other apps (including Quickoffice and Evernote) let you share, store, and browse files, but this app offers the cleverest mix of methods to spirit files on and off your iPhone. It talks to popular online storage services (like MobileMe or Box.net), downloads from websites, exchanges with computers on the same network, and lets you email files back and forth.

Disk Jockey: Swap files with any online disk using WebDAV technology including Readdle Storage, where you get $12 MB of space and a special email address to send files to add to the disk. Also, computers on the same WiFi network can download your files via web browser or add your iPhone as a network disk to exchange documents. The app’s built-in browser lets you grab files from the Web or other ReaddleDocs users.

File Frenzy: Organize files into folders and open a wide range of file types for reading. The app can open any file iPhone supports, including Microsoft Word, Excel, PDF, and PowerPoint, .Zip files work too: here opening Archive created the Archive folder. ReaddleDocs makes for easy reading, too letting you bookmark pages and scroll quickly through long documents. Pass files along to friends and co-workers via email.