It is getting crowded in the stable space. Tether was one of the front runners and is getting a lot of flack. Now we have some new kids on the block with regulation and backing.
Circle, Paxos, and TrustToken to name a few. I imagine most of these will be pushed out of existence before the end of 2019. Regulation and competition is heating up in the race to be the most stable stable coin.
Stable = tranquil. But right now the feces throwing is about to begin causing everything to be unstable. So saddle up and enjoy the ride!