AEON 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: 2014/06/06
Algorithm: CryptoNight
Total supply: ~18,400,000
Premine: 0
Block Time: 1 minute
Block Reward: (M-A) / (2^20) / (10^12) where M = 2^64 -1, A = supply mined to date
Difficulty Retarget: Every Block

Websites
Website
Bitcointalk
Cryptocointalk

Block Explorer
Source