# Projects that implement layer2 solutions


By [CryptoProdigy](https://paragraph.com/@cryptoprodigy) · 2023-08-20

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1.  **Optimism**: Optimism is a Layer 2 scaling solution for Ethereum that uses Optimistic Rollups to increase transaction throughput while maintaining Ethereum's security and composability.
    
2.  **zkSync**: zkSync is a Layer 2 scaling solution that employs zk-rollups to enable fast and low-cost transactions on the Ethereum network by aggregating multiple transactions into a single proof.
    
3.  **Arbitrum**: Arbitrum is a Layer 2 solution that utilizes Optimistic Rollups to bring high throughput and low fees to Ethereum, allowing developers to deploy scalable dApps.
    
4.  **Polygon (formerly Matic)**: Polygon provides a Layer 2 scaling solution for Ethereum, offering various sidechains and PoS networks to enhance scalability and enable faster transactions.
    
5.  **StarkWare**: StarkWare employs zk-rollups to bring scalability and privacy to Ethereum and other blockchains, allowing for efficient and private transactions on Layer 2.
    
6.  **Loopring**: Loopring is a Layer 2 scaling solution that utilizes zk-rollups to enable high-throughput and secure decentralized exchanges on the Ethereum blockchain.
    
7.  **Hermez Network**: Hermez Network is a zk-rollup solution that focuses on scaling Ethereum for payments, offering fast and low-cost transactions by aggregating transfers.
    
8.  **Celer Network**: Celer Network is a Layer 2 scaling platform that enables off-chain scaling solutions, allowing users to build and run highly scalable dApps.
    
9.  **ZKSwap**: ZKSwap is a Layer 2 decentralized exchange that uses zk-rollups to provide fast and gas-efficient trading on the Ethereum blockchain.
    
10.  **xDai Chain**: xDai Chain is a Layer 2 sidechain of Ethereum that utilizes a stablecoin (xDAI) for fast and inexpensive transactions, suitable for various applications.

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*Originally published on [CryptoProdigy](https://paragraph.com/@cryptoprodigy/projects-that-implement-layer2-solutions)*