View, edit, & create documents & spreadsheets in Word, Excel, PowerPoint, PDF, & Apple iWork. Sync files stored in Google Docs, Dropbox, and more. Works with Android, Blackberry, iPhone, & iPad. Universal app.
Powerful, geeky plain text editor. Backs up and syncs to Dropbox, includes control over font size and spacing for better viewing while typing, and a macro system that lets you add frequently used keys to a toolbar. Supports saving and opening in all file encodings (useful for international users). Universal app. Free and paid versions available.
Documents to Go
Nebulous Notes