DigitalNote is developing a privacy focused blockchain whose transactions will be resistant to analysis. The network will have a hybrid Proof-of-Work (PoW) and Proof-of-Stake (PoS) consensus mechanism and will be powered by the native XDN coin.

Hush is a cryptocurrency and messaging protocol that is focused on privacy. It uses a the equihash mining algorithm, which is a Proof-of-Work (PoW) consensus mechanism. It offers a high degree of privacy, and allows users to transact and send messages anonymously.
Hush is a fork of Zcash, and uses zk-SNARKS for zero-knowledge cryptography. Hush will allow developers to deploy Ethereum smart contracts on the Hush network.
The founders of Hush are closely associated with Komodo.

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.