As of now, Quantum Resistant Ledger (QRL) coin is represented on a few exchanges paired against BTC. Originally being an ERC-20 token, it switched to its own mainnet in 2018. The QRL claims to be the first decentralized cryptocurrency, that is resistant to both classical and quantum computing attacks.
Cindicator (CND) is the ERC-20 infrastructure token of an eponymous analytical platform. It can be found on several exchanges with cryptocurrencies as pairing options.
Vertcoin (VTC) is the coin of the Vertcoin enterprise. The coin is featured by a few exchanges and can be mined. The Vertcoin project has developed the “Proof-of-Work” algorithm called "Lyra2RE". Vertcoin was designed to serve as the graphics card mined version of Bitcoin. Therefore, one of the team’s goals is to make the mining process more affordable. Recently, the team decided to release updates on a quarterly basis instead of monthly updates.