Nxt is a blockchain platform developed by Jelurida, which is also developing the Ardor blockchain. Nxt's goal is to improve upon existing blockchain platforms with a modular toolset that enables users to create their own digital assets that can be listed on decentralized marketplaces. Nxt also features community driven voting mechanisms and has an architecture that separates the blockchain into parent and child blockchains.
The network is powered by the NXT token and has a Proof-of-Stake (PoS) consensus mechanism.

NEAR Protocol is a decentralized application platform designed to make DApps operable on the web. The NEAR network uses a Proof of Stake consensus mechanism called Nightshade. The NEAR utility token is used for processing transactions and storing data, as well as for facilitating voting for governance issues.
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Bytom is a Chinese company that is developing a blockchain platform that is specifically designed to register securities and physical assets to the Bytom blockchain. Bytom aims to create a secondary markets for these blockchain registered assets and will allow them to be tokenized.
Bytom is compatible with other platforms and enables high transaction speeds and anonymity.
One of Bytom's key features is its improved PoW consensus algorithm that is compatible with AI-enhanced ASIC chips. This allows for more efficient mining that uses less energy.