Flash Coin is a cryptocurrency designed to be used for everyday transactions. Flash's blokchain has a delegate-based consensus model that depends on elected delegates to verify transactions. These delegates elect 25 Miners who create new blocks on the blockchain. Each miner is given a specific time where they can mine a block. The Flash Coin algorithm also introduces a concept called Consensus Height, which refers to the moment when more than half of elected miners have created a block on top of another block in the chain.

Stellar is a decentralized protocol for sending and receiving money, in any pair of currencies, directly on the internet. Stellar enables users to transfer money on their network directly, without banks, and without fees. It was originally created by Jed McCaleb, the founder of Mt. Gox and co-founder of Ripple.
Stellar has its own native coin called Lumens (XLM). All users must hold a minimum of 20 Lumens in order to ensure their authenticity and to maintain a wider distribution and free flow. Users must spend 0.00001 XLM in order to transfer fiat currencies. This provides the network with more liquidity for less popular currency pairs. Lumens are an inflationary currency with a fixed increase rate of 1% per year.
The network uses the Stellar Lumens Consensus Protocol (SCP). Unlike PoW or PoS consensus mechanisms, SCP relies on a Federated Byzantine Agreement (FBA), in which specific groups of nodes are chosen to arrive at transaction agreement. This provides the Stellar network with more decentralized control.
Lightyear.io, a for-profit entity of Stellar, was launched in 2017 as the commercial arm of the company.

Peercoin is the first Proof-of-Stake (PoS) cryptocurrency. It was created in 2012 and is one of the oldest and most reliable cryptocurrency networks in the crypto sector. The protocol was developed by Sunny King and Scott Nadel, both of whom are anonymous. Sunny King also created Primecoin and VEE.
Peercoin’s PoS consensus mechanism is now widely used in the blockchain space, and allows every network participant to be both a miner or an owner. The project is focused on creating a cryptocurrency platform that will be stable, secure, energy efficient, and distributed fairly.