Ubiq is a decentralized platform which allows the creation and implementation of smart contracts and decentralized applications. Built upon an improved Ethereum codebase, the Ubiq blockchain acts as a large globally distributed ledger and supercomputer, allowing developers to create decentralized and automated solutions to thousands of tasks which today are carried out by third party intermediaries.
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.