Skim is a PDF reader and note-taker for OS X. It is designed to help you read and annotate scientific papers in PDF, but is also great for viewing any PDF file.
FeedDemon is the most popular RSS reader for Windows, with an easy-to-use interface that makes it a snap to stay informed with the latest news and information.
Foxit Reader 2.0 is a free PDF document viewer and printer, with incredible small size (only 1.5 M download size), breezing-fast launch speed and amazingly rich feature set. Foxit Reader 2.0 supports Windows 95/98/Me/2000/XP/2003