Ducknote is GPU mineable on both ATI and AMD.  Claymore AMD Miner is closed-source and gives mandatory 5% to developer. Tsiv’s ATI Miner is open-source.

Technical Information
Release Date: 2014/05/30
Algorithm: CryptoNight
Total supply: 8,589,869,056
Premine: 0
Block Time: 4 minutes
Block Reward: 320,000 reducing 11,000 every month
Difficulty Retarget: Every Block

Websites
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Forum
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Source