Re: Nxt marketing & promotion :: Nxt is now 100% Open Source! And on Cryptsy!
Very little, but still, we are there 
http://www.dcmagnates.com/any-coins-resistant-to-malleability-attack-mastercoin-explains-how-it-is/
http://www.dcmagnates.com/any-coins-resistant-to-malleability-attack-mastercoin-explains-how-it-is/
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There are also 2nd generationcryptocurrencies claiming to have been built independent of Bitcoin, one of the most prominent being Nxt.