Nexus One already comes with a document viewer based on Quickoffice, but the application doesn't do a great job at previewing PDF files. Adobe Reader for Android opens PDF files much faster than Quickoffice and it has a better zooming feature.
"Adobe Reader for Android offers multi-touch gestures, like pinch-and-zoom, as well as double-tap-zoom, flick-scrolling and panning. We've also added a reflow mode, which will take text-heavy documents with wide margins, and automatically wrap the content for easy viewing on smaller screens," explains Adobe.
The application doesn't include basic features like search or support for password-protected files, but it's snappy, documents are readable and the applications opens in full screen. There aren't many free PDF viewers for Android and Adobe's application is clearly the best right now.
