TextGuru is a full fledged text editor for the iPhone. It let’s you organize files in nested folders, offers cut, copy and paste, can share files via wifi, and can import files via FTP and the Internet. It also serves as a viewer of common file formats such as PDF, MS Office, and more. It’s a jack of all trades utility for those serious about their documents.

While Save My Docs is a one trick pony, all it does is save documents viewed within Safari and then allow you to view them within the app, it does it fairly well. Other viewers offer a variety of ways to get documents onto your iPhone, but Save My Docs is novel and useful.

Air Sharing is a great memory stick replacement and document viewer

DataCase allows you to both store documents on your iPhone and view them on the go.