Sumokoin (スモコイン in Japanese) is a fork from Monero, one of the most respectable cryptocurrency well-known for security, privacy, untraceability and active development. Starting as an educational project, they found that it would be great to create a new coin with high level of privacy by (1) moving forward right away to Ring Confidential Transactions (RingCT), (2) setting minimum transaction mixins to 12 (usualy is 8) that would make it high resistance to blockchain analysis attacks. Transactions are confirmed by distributed consensus, and then recorded on the blockchain immutably.
More info http://sumokoin.org
The Brazilian cryptocoin, Secure and private it is very similar to Monero, this cryptocoin has been created to give impulse to the services provided by the “Bolsas de Moedas Digitais Empresariais de Sao Paulo” (BOMESP) platform
More info http://niobiumcoin.io
It is a decentralized and private opensource cryptocoin. Bytecoin is the first implementation of Cryptonote technology relase dating back to 2012, it have largest ecosystems and mass adoption.
More Info http://bytecoin.org
The graft blockchain is a decentralized payment gateway and payment processing plattform that anyone can use. Buyers and Sellers can use Graft like a Point of Sale terminal.
More info http://www.graft.network
MONERO V (XMV)
MoneroV is a future fork of Monero. This fork will be in block 1564965 (30th April). This coin it is not minable until that block. MoneroV is based in the Austrian school of economics priciples with blockchain scaling plans. Holders of XMR will be owners of XMV too and will receive 10 times the XMR amount they hold.
More info https://monerov.org