Now you can turn any web site into a windows program or mac application.
Just download Site Specific Browser for Windows or Mac and then rename the program or app to the name of any web site.
For instance rename the app or program to facebook.com on a Mac or facebook.com.exe on a Windows PC.
You can make copies of your app or program and rename them to any other web site. Create as many as you want.
Every app or program you create is completely portable so you can share them with anyone including online software sites.