NXT is one of the early cryptocurrencies and was started in 2013. As the Jelurida project’s website states, it was the “first to rely entirely on the PoS protocol”. It is currently listed by the number of exchanges.
POA Network (POA) is the native token of an open-source POA network for smart contracts. The token is built on the POA project’s blockchain and listed on several exchanges.
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.