Apple.com - downloads
http://www.apple.com/support/downloads/Symantec Worldwide Home Page -Symantec's Norton brand of consumer security products is a leader in worldwide retail sales and industry awards.
http://www.symantec.com/Microsoft Download Center
http://www.microsoft.com/downloads/search.aspx?displaylang=enMailwasher - an email checker with effective spam elimination. Discover the safe way to stop unwanted viruses and e-mails before they get to your computer.
Free Download
http://www.mailwasher.net/Zone Labs - a leading creator of endpoint security solutions and a trusted brand in Internet security
http://www.zonelabs.com/store/application?namespace=zls_main&origin=global.jsp&event=link.home&&zl_catalog_view_id=201