Alibaba Coin is a digital currency that plans to implement blockchain-based facial recognition technology that will allow users to make transactions by showing their faces to a merchant's camera. Alibaba Coin was created by a company in Dubai, and has no relation to the Chinese online retail giant.

Feathercoin is a PoW coin with a fast block processing time. The project was developed with the goal of creating a user friendly coin with fast transaction times and low fees. The Feathercoin network features Automatic Checkpointing (ACP), which is used to prevent 51% attacks. ACP creates a new checkpoint every 5 blocks, protecting the history of the Feathercoin blockchain.

BitcoinDark is a fork of Bitcoin with a poorly defined purpose and use case. BitcoinDark is based on the InstantDEX protocol, a decentralized exchange for BitcoinDark and other cryptocurrencies supported by the project. The platform is also supposed to include a Pegged Asset Exchange (PAX) to allow users to buy and sell pegged assets – including fiat currencies, commodities, ETFs, and stocks.
BitcoinDark is a Proof-of-Stake (PoS) currency that has gained a significant market cap, but the project has failed to show how its vision will be implemented or how it will add value compared to other blockchain projects.