Supports Windows and Linux. Supports windows driver and Linux AMDGPU Pro driver. Supports most cards. Comes with pre-built binary kernels to speed up Ellesmere and Vega cards.
https://github.com/fancyIX/sgminer-phi2-branch/releasesEstimated speed (beta5fp4):
phi2, rx 580: 3750khs; vega 56: 6750khs
lyra2Z, rx 580: 1950khs; vega 56: 3600khs
allium, rx 580: 4500khs, vega 56: 8200khs
x22i, rx 580: 5100khs, vega 56: 9000khs
I know that may be below the speed of some closed-source miners. Hope one day it can catch up.