user1891: Apart from bitcoin, I know few other crypto currencies (by this I mean currency which works in a similar way to bitcon). They are:

namecoin
lightcoin
ripple

I also heard about SolidCoin, but as far as I understood it is already dead.
Is this everything or am I missing something

user4759: The bitcoin wiki has a list:
https://en.bitcoin.it/wiki/List_of_alternative_cryptocurrencies
There is a forum dedicated to alternative coins at bitcointalk:
https://bitcointalk.org/index.php?board=67.0

1891: <p>Apart from bitcoin, I know few other crypto currencies (by this I mean currency which works in a similar way to bitcon). They are:</p>

<ul>
<li>namecoin</li>
<li>lightcoin</li>
<li>ripple</li>
</ul>

<p>I also heard about SolidCoin, but as far as I understood it is already dead.</p>

<p>Is this everything or am I missing something</p>
 4759: <p>The bitcoin wiki has a list:</p>

<p><a href="https://en.bitcoin.it/wiki/List_of_alternative_cryptocurrencies" rel="nofollow">https://en.bitcoin.it/wiki/List_of_alternative_cryptocurrencies</a></p>

<p>There is a forum dedicated to alternative coins at bitcointalk:</p>

<p><a href="https://bitcointalk.org/index.php?board=67.0" rel="nofollow">https://bitcointalk.org/index.php?board=67.0</a></p>
