Pirate Chain is a privacy focused cryptocurrency that is based on Komodo's dPoW consensus mechanism. Pirate Chain uses ZK-Snark cryptography to secure transactions that are sent on their anonymous, decentralized network.

Grin Coin is a community driven blockchain project that aims to create a lightweight mimblewimble blockchain that will enable anonymous transactions. Grin has a Proof-of-Work consensus mechanism. Transactions are executed while hiding addresses and amounts.

Verge is a privacy focused cryptocurrency. It was formerly known as DogeCoinDark and was rebranded to Verge Currency in 2016. Verge uses multiple anonymity-centric networks such as TOR and I2P. The IP addresses of the users are fully obfuscated and transactions are completely untraceable.
Verge is based on the Wraith Protocol that enables users to be able to send and receive payments privately across their blockchain with stealth addressing services and complete anonymity. The protocol provides an additional layer of IP obfuscation as well as the option to utilize stealth addressing services for transactions.