The Cosmos network consists of many independent, parallel blockchains, called zones, each powered by classical Byzantine fault-tolerant (BFT) consensus protocols like Tendermint (already used by platforms like ErisDB).
Tron is a blockchain-based decentralized operating system much like $ETH that aims to advance the decentralization of the Internet and its infrastructure. Tron is a smart contract platform that offers high throughput and high scalability.
Polkadot is a platform that allows diverse blockchains to transfer messages, including value, in a trust-free fashion; sharing their unique features while pooling their security. In brief, Polkadot is a scalable heterogeneous multi-chain technology.
Polygon is the first well-structured, easy-to-use platform for Ethereum scaling and infrastructure development. Its core component is Polygon SDK, a modular, flexible framework that supports building multiple types of applications.
Cardano is developing a smart contract platform which seeks to deliver more advanced features than any protocol previously developed. It is the first blockchain platform to evolve out of a scientific philosophy and a research-first driven approach.
Dogecoin was created based on the popular "Doge" Internet meme and features a Shiba Inu on its logo. The codebase of the project was a fork of Litecoin, in which most of the same features such hash hashing algorithm were inherited.
Ripple is a privately-held fintech company that provides a global payment solution via its patented payment network called Ripple Network. RippleNet is a payment network that is built on top of Ripple’s consensus ledger, called XRP Ledger.