http://en.numista.com/catalogue/index.php If you just want to know the silver content and mintages etc.
This has some of the major countries silver values. http://www.australian-threepence.com/silver-calculator/australian-silver-coin-values/ If you look on the right hand side of the screen you will see the countries available. NZ,Can,Aust,USA ,UK,Panama ,Swiss,Mexico.
I use Quicken to track my precious metal portfolio, but not really a good sight: all in the red with loads of unrealized losses. @$%%%!!!