List of the Top 8 Layer 2 Protocols for Across Protocol in 2025

The latest advancements in layer 2 solutions for Ethereum dApps empower developers to leverage their preferred tools while effectively reducing the expenses associated with scaling their applications. Within this framework, an aggregator functions similarly to a node on Ethereum, allowing client software to execute remote procedure calls (RPCs) through a standardized API to interact with an Arbitrum chain. This aggregator plays a crucial role by transmitting these calls to the EthBridge and returning the results of transactions to the client, reflecting the behavior of a conventional Ethereum node. Although it's common for clients to route their transactions through an aggregator when engaging with an Arbitrum chain, this is not strictly necessary. The architecture permits an unlimited number of aggregators to be created, and there are no restrictions on who can act as an aggregator. To optimize processing efficiency, aggregators often merge several client transactions into a single submission to the Arbitrum chain. Moreover, the Arbitrum ecosystem includes a specialized Sequencer capable of organizing transactions, which leads to rapid transaction confirmations with minimal latency. This groundbreaking arrangement not only enhances overall throughput but also cultivates an adaptable environment where developers can explore and innovate without the constraints of high costs, ultimately promoting greater experimentation within the blockchain space. By providing such flexibility, layer 2 solutions are poised to significantly transform the landscape of decentralized applications.

Base serves as an economical and secure Layer 2 solution for Ethereum, specifically tailored for developers who want to broaden web3 access to a billion users. By leveraging Ethereum’s core security, it ensures the crucial scalability and safety required for decentralized applications, while allowing smooth transitions from platforms like Coinbase, Ethereum Layer 1, and other compatible ecosystems. Developers benefit from utilizing the Ethereum Virtual Machine (EVM) environment at a dramatically lower cost. In addition, users can experience early access to cutting-edge Ethereum functionalities such as Account Abstraction (ERC4337), intuitive developer APIs for gasless transactions, and advanced smart contract wallet features. Constructed on the open-source OP Stack from Optimism, Base streamlines the integration process for decentralized applications with Coinbase’s range of products and vast distribution network. With seamless Coinbase integrations, accessible fiat onramps, and links to the Coinbase ecosystem—which includes 110 million verified users and $80 billion in managed assets—Base stands out as a prime platform for developers eager to enhance their visibility and efficiency in the web3 domain. The array of features offered by Base not only appeals to developers but also fosters an environment ripe for innovation within the decentralized landscape, encouraging a new wave of creative applications and services.

Blast stands out as the only Ethereum Layer 2 solution that provides built-in yield for both ETH and stablecoins, with its earnings originating from ETH staking and protocols involving real-world assets. This yield produced by decentralized networks is efficiently redistributed to Blast users. Unlike most Layer 2 solutions that maintain a standard interest rate of 0%, our objective as participants is to bolster the on-chain economy by creating the highest-yielding Layer 2 network possible. Community members who take part in this venture will have the chance to receive the Blast Airdrop. The potential of Blast was unlocked this year, thanks to the Ethereum Shanghai upgrade. Yield generated from Layer 1 ETH staking, initially via Lido, is automatically sent to users through a rebasing mechanism integrated into the Layer 2 network. By cultivating a thriving ecosystem, we aspire to draw in a larger user base and continue to push the boundaries of innovation within the decentralized finance realm, ultimately shaping the future of finance.

Mode is an innovative Layer 2 solution on Ethereum that rewards users for helping to grow its network through cutting-edge economic models. This platform is establishing a new on-chain economy that rewards individuals for their efforts in expanding the network. Developers can earn a portion of the sequencer fees generated from their smart contracts, providing them with a direct financial incentive. Furthermore, Mode's unique treasury system will automatically distribute rewards across the ecosystem, ensuring consistent engagement and support. Leveraging the modular OP stack, Mode is integrated into the super chain network, which encompasses both the base and OP mainnet. Users can benefit from a streamlined and intuitive blockchain experience through the Mode name service. In addition, the Mode bridge allows for effortless asset transfers between Layer 1 and the Mode platform, significantly enhancing the network's flexibility and accessibility for users. This comprehensive approach not only promotes growth but also deepens community involvement within the blockchain ecosystem, creating a vibrant and collaborative environment for all participants. Ultimately, Mode aims to redefine how blockchain interactions occur by prioritizing user engagement and economic incentives.

Unichain operates as a Layer 2 solution focused on decentralized finance (DeFi) within the Ethereum ecosystem, designed to serve as a pivotal center for cross-chain liquidity. This innovative platform improves both transaction speed and cost-effectiveness, featuring remarkable block times of only one second and aiming to reduce transaction fees to one-twentieth of conventional Ethereum rates. Leveraging the OP Stack framework, Unichain prioritizes scalability while promoting open-source development, with aspirations for future implementations like Provable Block Building. It caters specifically to the requirements of developers and users in the DeFi space, providing extensive resources for the creation of liquidity pools and the deployment of smart contracts. With a rich background in building the largest decentralized trading protocol in the world, Unichain guarantees that its technological advancements remain open-source, encouraging other rollups to adopt these innovations effortlessly. Furthermore, a dedicated network of full nodes diligently monitors and verifies the sequencer's operations, contributing to enhanced transaction speeds and decentralization within the Unichain network. By fostering transparency and active community participation, Unichain is strategically positioned to lead the charge in the rapidly changing world of decentralized finance, continuously adapting to the evolving demands of this dynamic sector.

Ethereum's new scalability framework guarantees swift transactions and effective smart contract execution. Optimism functions as a Public Benefit Corporation (PBC), which is designed to generate profits while also delivering societal benefits through responsible and sustainable methodologies. This organizational model requires us to balance our shareholders' financial interests with the well-being of those affected by our decisions, adhering to a defined "public benefit charter." The primary goal of the Company is to enhance and protect fair access to public goods on the internet by developing open-source software. This charter reflects our dedication to the Ethereum community, as we work to uphold its core values by building infrastructure that supports the growth and sustainability of a public goods ecosystem. By doing so, we not only seek to advance technological progress but also to promote an inclusive atmosphere where all users can thrive. Ultimately, our efforts aim to bridge the gap between innovation and accessibility, ensuring that the benefits of technology are shared widely.

zkSync emerges as the leading user-centric ZK rollup solution within the Ethereum landscape. This cutting-edge scaling technique is unparalleled in its ability to securely handle unlimited volume on Layer 2, distinguishing it from alternative approaches. Unlike optimistic rollups, zkSync enables swift and cost-effective asset transfers between the ZK rollup and Layer 1. It's worth noting that zkSync offers the most affordable transaction fees among all existing and upcoming rollups. Moreover, it includes functionalities such as meta-transactions, instant confirmations with economic finality, and economical privacy solutions. The philosophy driving zkSync's design prioritizes both simplicity and a pleasurable development experience. Developers can seamlessly incorporate payment systems and atomic swaps with minimal coding effort. Additionally, zkSync supports the development of type-safe, functional smart contracts using Zinc, a Rust-based framework, while also allowing the deployment of existing EVM codebases with slight modifications. This impressive array of features positions zkSync as a compelling option for developers who are eager to achieve both efficiency and innovation in their blockchain projects, ultimately fostering a more accessible environment for blockchain advancement.

Polygon, which was previously referred to as Matic Network, is a comprehensive protocol and framework established for the development and interconnection of blockchain networks that are compatible with the Ethereum platform. Despite Ethereum being the favored choice for blockchain initiatives, it has its own set of limitations. Polygon effectively tackles these challenges by offering a straightforward method for deploying pre-configured blockchain networks with a single click, bolstered by a growing selection of modules that aid in the creation of tailored networks. Furthermore, Polygon includes an interoperability protocol that allows for the seamless transfer of messages between Ethereum and various other blockchain ecosystems, in addition to providing a modular and optional “security as a service” feature. Its adaptor modules significantly improve the interoperability of existing blockchain systems, simplifying their integration process. By combining the advantages of Ethereum with those provided by autonomous blockchains, Polygon delivers an attractive range of functionalities aimed specifically at developers. In essence, it is meticulously designed by developers to cater to the unique requirements of their peers, ensuring it aligns well with the evolving demands of the blockchain community while fostering innovation and collaboration within the space.