I found this bit of information here (
http://www.cs.wright.edu/~jslater/mac-tex/mac-tex-intro/mactexintro.html):
Adobe Reader (I wouldn’t)
Adobe Acrobat (Not this either)
Preview (Maybe better)
Skim (Awesome, my pick)
TEXShop - Works well as a viewer-only with extra tools
iTEXMac - Also works well as a viewer-only with extra tools
OzTEX (if not using PDFLaTEX)
CMacTEX(if not using PDFLaTEX)
MacDVIX (if not using PDFLaTEX)
If PDFTEX is used, any PDF(R) viewer can be used, but hyperlinks don’t work in viewers using Apple’s(R) PDF code (e.g. Preview, iTEXMac, TEXShop, Skim...), so you may want to have Adobe Reader(R) or Acrobat installed to test your hyperlinks.