It is an open source miner for AMD cards. Support x16r/x16s/xevan/x17/phi/tribus/aergo/polytimos/skunk algos. It contains 1% dev fee. For now it is compiled for Linux. Windows version will be add later or you can compile it from the source.
Use -w 256 for skunk.
To get best perfomance start with -X 256, also you could add -g 2, to execute algos in 2 threads, it could give you better perfomance. Also use -w 256 for phi, polytimos, skunk algos