Free Skim PDF Reader for Mac

Skim is a free clean & simple PDF reader application for Mac that provides its users the easiest way to view PDF files and add notes. Skim includes multiple useful features and comes with an easy to use interface with convenient full screen reading mode. You can Navigation using table of contents or thumbnails.
Download free open source Skim for Mac OS.[source]
Skim File Size 3.9 MB.
Skim Website