Groestl GRS has Segwit and Lightning Network on Main Net. Only competition as far as I can see is Ripple at massive cap, Vertcoin at $35m cap, Syscoin at $75m cap, Litecoin at $3b cap.
GRS $8m cap $$$$$$$😀😀😀😀😀😀
Groestlcoin was first coin to have segwit and lightning network on mainnet. Very undervalued.