QuazarCoin 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: 2014/05/08
Algorithm: CryptoNight
Total supply: ~18,446,744
Premine: 0
Block Time: 2 minutes
Block Reward: (2^64 – 1 – A) * 2^(-21) * 10^(-12), where A = supply mined to date
Difficulty Retarget: Every Block

Websites
Website
Announcement Thread
Forum
Reddit
Block Explorer
Source