There is a list of 645 altcoins and their prices at this link.

http://coinmarketcap.com/all/views/all/

Everything on it excluding bitcoin is an altcoin. The default prices are in USD and if you want them in bitcoin then click the USD drop down and select bitcoin from the list.

There are more altcoins besides those on the coinmarketcap.com page but they are unlikely to be traded on exchanges.