From Nitro Software:
Nitro PDF Reader allows you to create PDF files from over 300 different formats. Comment, review, and collaborate. Fill and save PDF forms. Extract text and images. Add a scanned image of your signature and use QuickSign to electronically sign and return documents in seconds. Nitro Reader utilizes the Microsoft Office-style Ribbon interface, The Quick Access Toolbar (QAT) allows you to create an easily accessible group of shortcuts to the tools you use most frequently. Nitro Reader offers navigation panes, including Pages, Bookmarks, Comments, Output, Signatures, and Attachments, allowing for easy navigation of larger documents, and providing a central location for additional content.