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.
AdEx (ADX) stands for “advertising exchange.” AdEx Coin is a blockchain-based marketplace for ads that aims to change the existing online advertising landscape and solve its major problems: ad fraud, privacy and consent to receive sponsored messages, etc. AdEx is fully transparent and built on the Ethereum Smart Contracts. AdEx is still in development, so it’s difficult to say much yet about it at this point. The original roadmap anticipated a beta release in February 2018. It remains to be seen if the team will meet that deadline. Future plans for version two of AdEx after launch focus on improving the user experience and scalability. AdEx has also expressed an interest in implementing a real-time bidding solution that could take place off-chain or on a high throughput network, like IOTA. AdEx raised $10 million in the first three hours of token sale. AdEx as a platform has room for a good amount of growth since digital advertising is a booming business anyway. But by eliminating flaws and continuing updates on its current platform, AdEx aims to stand firm in the near future.