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.
SLT is an Etherum (ERC20) based token with a goal to create fully transparent decentralized cryptocurrency exchange platform which is focused on the needs of its users. Platform will focus on revolutionizing transactions speed and achieving instantaneous execution with successful use of maximum what blockchain technology can provide INSTEAD of centralized processing. As an extra feature this exchange will have its own prepaid card from which every member can cash out their profits.