There a many more privacy coins in the market, I think the total number of active projects is around 20 but Ryocurrency is my favorite due to the community and eases to communicate with the team and devs.
In their upcoming fork (in few days) they are going to do some major updates to make RYO more private and secure and which will also increase its future potential and value. I think RYO is the only project besides BTC which is truly focused on Privacy and decentralization.