Stealthcoin (XST) has been rebranded to Stealth (XST): https://twitter.com/stealthsend/status/993226001101545473 Stealthcoin provides a complete anonymity solution for cryptocurrencies. Stealthcoin has a fair distribution with nearly four hours of low block rewards, a small premine of 1%, and the long-term energy efficiency of proof-of-stake minting.
EXMR is the official token of GetCryptoPayments® gateway, and its main function of this payment gateway will be to integrate a wide universe of currencies and tokens through a competition, with the acquisition of Ethereum Monero for that purpose. The online merchants and the local store can receive payments on most cryptocurrencies, safely and quickly with a low rate. This payment gateway will allow retailers worldwide to accept payments in Ethereum Monero, Bitcoin, Ethereum, Litecoin, and altcoins. There will be no fees for payments made in EXMR.