Read saved web pages on the go, even offline. Install a bookmarklet in your browser on your computers and click to save a whole article into Instapaper for later reading on your iPhone or iPad. Text-only view make it easy to read without scrolling right and left. Adjust the fonts to a size that works for you. Universal. (Free version available for less than 10 articles).
Super-robust PDF reader with advanced reading, annotating, markup and highlighting capabilities, excellent file manager, text file reader and editor, audio/video player, Safari-like viewer for MS Office and iWorks files. Syncs with Google Docs, MobileMe, Dropbox and more. Create your own hierarchy of folders to save your documents into. Highly recommended for reading & annotating scholarly articles.
Access and read your Amazon Kindle books even if you don't have a Kindle. Automatically synchronizes your last page read between devices. Delete a book when you're done and Amazon keeps your copy online for later retrieval. Adjust the text size, add bookmarks, and more. Universal iOS app. Free. Android version available.
Organize, read, annotate, and share your collection of articles and PDFs on iPhone and iPad. Highlight or use sticky notes to comment on text. Search within Papers to find articles, upload PDFs in iTunes, or import PDFs from email, Dropbox, or MobileMe. Set up library proxy settings. Universal app.
Read content from Facebook, Google Reader, Twitter, and more in a magazine-style layout. View everyday content in an alternative way that emphasizes linked content, videos, and photos. Get interested in content that you might typically skip when browsing social media. For iPad & iPhone. Free.